Question

For the line y=2/5x, if the y-coordinate is 20, what is the x-coordinate?

A. 50
B. 8
C. 5/2
D. 125

Answer 1

okay so if y= 2/5x then if you plug in for y you get 20=2/5x
now do you know the first step to solving this equation?

Answer 2

Nope

Answer 3

Okay well we have to get x by itself
so to do that we have to find a way to get 2/5 to the same side as y

Answer 4

So we multiply ?

Answer 5

yep! do you know what you need to multiply each side by?

Answer 6

5

Answer 7

you could do that
or to make it easier you can multiply by the reciprocal of 2/5

Answer 8

So the answer is 8

Answer 9

yep! that's right!

Answer 10

Thank You

Answer 11

no problem!