Question

What is the value of y, given the following?
y=3x-5
4x+2y=-40
How would you do this problem?

Answer 1

@Gabylovesyou @iambatman

Answer 2

anyone know how?

Answer 3

@Preetha

Answer 4

@Hero

Answer 5

(-3,-14) when u have questions like this use a desmos calculator and the point where there meet up is the answer hope this helps (:

Answer 6

Hmm...IF you look at the question, the first equation tells you the value of "y " right?
It says " y = 3x - 5 "
So you want to simply SUBSTITUTE " y = 3x - 5" into the second equation
"4x+2y=-40 "
(by substitute, it just means that wherever you see " y" , you would replace it with 3x - 5)

After that, you want to solve for x.

Once you get the value of x, you substitute the value of x ( x= ...) BACK into the first equation " y = 3x - 5" and therefore, you'll get your y value :)

Answer 7

So if we write it out, you end up with something that looks like this: