Okay, Mr. McLogan, I have solved my equation. But, I still don't know or understand if it should be -y2 = -4x – 6; Therefore, y is not a function of x….OR should it be to solve the previous equation further and now say y=4x+6 and IS a function of x. Please help. I don't want to cheat. I just want to understand. I am SO LOST.

Determine whether the equation define y as a linear function of x. If so, write it in the form y=mx+b. 4x – 7y2 + 6 = 0; **the 7 is y to second power…exponent.

okay since y is squared you will have to take the square root on both sides to undo the operation. Therefore leaving you with a positive and negative value of x. Y cannot be defined as a linear function of x. This can only be done when all exponents on variables are raised to the first power and no two variables are multiplied by each other or appear in the denominator. Does this help?

you had me a bald guy! : ) c'mon it's shaved head, there is no loss of hair. haha really happy to help you out. Keep up the hard work, bald man is a working.

Oh, my goodness!!!!! Thank you so much!!!! You have no idea how much this helped me!!!! I'm in Trig and PreCalc and we just learned this today, and I had NO idea how to do it. It turns out that my math teacher taught us this same thing, just in a WAY more complicated way that I didn't understand at all. BUT, then I watched this, and I completely understand now!!!! THANK YOU SO MUCH!!!! You just saved my life 😀

I'm pretty confused how is radical 4 equal to 2 and at the same time equal to 2 you didnt say the point only if there is "" out of the radical it becomes -2

Hello!I received two questions that say to determine y as a function of x (or not). I'm attempting to solve these two and ran into some problems.

Well, the first question is y = x² ± 3. How would I go about solving the problem with a plus/minus sign? Does that mean I will have two answers? Do I solve it normally?

And the second question: x = 12 – y. Would I subtract 12 as to get y alone? But, if I do, it will be "-y = x-12" Then how would I deal with that negative sign?

im so confused by your example. given the square root or x^2+1 why can you not just take out the square root giving you x+1? it makes almost no sense to me that you would have to keep it the way it is. and also is that the case for a cubed root as well?

In regards to the second equation, wouldn't the answer not exist? You dropped the negative in continuing to solve the equation. The square root would have been taken from -x^2 not x^2. Does this change the result?

Just 1 question, if I have y^=(squareroot)x+2, which is similar to your second one. How would I know if that is a function or not

can you reprint that problem again this is what I think you are asking y^2 = sqrt(x+2)?

Is that it or what is the problem again?

so if it has a y^2 then it can't be a function of x?

correct

thanks. Cleared that up for me on my math homework

great, glad i could help

thank you your awesome

your welcome!

Yes! I have all the videos you should need in your class. Three years running making videos. Happy to help!

Okay, Mr. McLogan, I have solved my equation. But, I still don't know or understand if it should be -y2 = -4x – 6; Therefore, y is not a function of x….OR should it be to solve the previous equation further and now say y=4x+6 and IS a function of x. Please help. I don't want to cheat. I just want to understand. I am SO LOST.

what is your original equation?

Determine whether the equation define y as a linear function of x. If so, write it in the form y=mx+b. 4x – 7y2 + 6 = 0; **the 7 is y to second power…exponent.

okay since y is squared you will have to take the square root on both sides to undo the operation. Therefore leaving you with a positive and negative value of x. Y cannot be defined as a linear function of x. This can only be done when all exponents on variables are raised to the first power and no two variables are multiplied by each other or appear in the denominator. Does this help?

THANK YOU!!!!!!!!!!

you are welcome! happy to help.

So what if (on the second problem) the y isn't squared? Do you still use the square root and get a +- out of the answer?

no if it just y then the answer would be 8 since it is y squared we have to take the sqrt of both sides

Where did the 8 come from?

On the first problem if you subtract x , could it be y= 9-x or does it have to be y= -x +9 … Thank you

my favorite bald guy!!! u just saved me thanks so much!

you had me a bald guy! : ) c'mon it's shaved head, there is no loss of hair. haha really happy to help you out. Keep up the hard work, bald man is a working.

Awesome!! I always get stuck on these problems!

no worries, happy to help!

You explained to me in 3 minutes what my teacher couldn't in 2 hours, thank you!

you are very welcome! happy to help

You look shy.. Didn't really understand it tho.. But knew what u were saying.. At least now I know alil about this math

Do you have a question I can help you with to better understand? Sometimes shy, sometimes not, depends on my mood i guess

So pretty much every time you have to use the square root then the answer will not be a function?

×=y^2+4 would not be a function?

what about x < 4y…how do I solve for that?

thank you!

so if anything is y^2 or x^2 or anything squared, its not a function?

Oh, my goodness!!!!! Thank you so much!!!! You have no idea how much this helped me!!!! I'm in Trig and PreCalc and we just learned this today, and I had NO idea how to do it. It turns out that my math teacher taught us this same thing, just in a WAY more complicated way that I didn't understand at all. BUT, then I watched this, and I completely understand now!!!! THANK YOU SO MUCH!!!! You just saved my life 😀

Hmmm I still dont understand T-T! Im going to fail my test tomorrow aaaahhh!!

What if the problem looks like this x+2y=6 help me workout help problem

god bless you u helped me alot

You should provide more examples than just the most basic ones.

2x-5y²=2

4|y| -5x²=2

thanks a lot m8 the video helped me, I have my algebra test in 2 days.

PLZ HELP! I can't solve this problem. X=-y^2+2y+1 I can't find the y-value.

Cool, Thank you!! 🙂

Thanks.. very helpful. Get a glass of cold water please.

I'm pretty confused how is radical 4 equal to 2 and at the same time equal to

~~2 you didnt say the point only if there is "~~" out of the radical it becomes -2And what about the domain and range?

Drink some water.

Thank you! This made waaay more sense than when my professor explained it.

if y has an exponent of 3 is it still a function?

OH MY GOD. THANK YOU THIS IS SO HELPFUL!!!

This man has literally come to the rescue for me…a week late in college classes, you're the best man

is y=|x| a funtion?

Thank you. This helped me under understand this concept very easily

would y=|4x-18| be a function? what about |y|=4x-18

Why does this make 0 sense to me

is y=√x+3 a function and why?

Thank you! This actually helped me.

Hello!I received two questions that say to determine y as a function of x (or not).

I'm attempting to solve these two and ran into some problems.

Well, the first question is y = x² ± 3.

How would I go about solving the problem with a plus/minus sign? Does that mean I will have two answers? Do I solve it normally?

And the second question: x = 12 – y.

Would I subtract 12 as to get y alone? But, if I do, it will be "-y = x-12" Then how would I deal with that negative sign?

Is y=x^3 a function and you can explain?

when you subtract x^2 on both sides won't you get plus minus i when you square root both sides?

does this mean that anytime there is a exponent of 2 that it is not a function ?

The problem I'm working on is y=4x(squared)

I thought it wasn't a function because of the square after the X, but the answer key is saying that it's a function. I'm confused.

I got a 45 on my test, but it would've been a 0 without your help. Thanks man

so basically what he meant was that everytime you have an y^2, it will not be a function because y is not allowed to be squared, only the x can.

Is f(x)=x a function? Why?

okay so YOU HELPED ME BIG TIME FOR THIS QUIZ BUT i dont get the f(x) crap for my practice problems if im solving for Y

Thank you! This helped a lot!

Thanks!

What if you had to cube the answer. Ex: x+y^3+5=10

Thanks a lot, funny how my professor won't explain this as easy as you do.

thx fam

Thank You! 🙂

This teacher is litty 💯

is 2x^2 + y^2 = 5 isnt a function right?

Thanks a bunch!

Wait but what does y=3^x mean?

Fuck ads

im so confused by your example. given the square root or x^2+1 why can you not just take out the square root giving you x+1? it makes almost no sense to me that you would have to keep it the way it is. and also is that the case for a cubed root as well?

X2-y2=?? PlZ😢♥

Can y be raised to an odd power and be a function

In regards to the second equation, wouldn't the answer not exist? You dropped the negative in continuing to solve the equation. The square root would have been taken from -x^2 not x^2. Does this change the result?

So x= any number

Is also not a “y is a function of x” answer?

Thank you for the brief understanding.. really helpful..

So all in all, if it has 2 answers for y, then it's not a function of x

so it needs to be a one-to-one equation?

But you can’t take the square root of the negative X

You just saved me from a zero bih

What if its x + y^3 = 8? Is it a function?

So if y is ^ to any number does it mean its already not a function? Plsss answer i have an exam tomorrow and im really struggling😭

Please use darker markers! Good job!

God…

How many times has this man saved my life? Too many to count lol

Omshi thank you!

What allowed you to get rid of the -x +1 and make it x+1?????

what if y is a negative?

No entendí nd

Hello I was wondering if y is a function of x in this equation y^3-3x=8 why or why not