Question

Solve y = -2x + 3 for x.

Answer 1

Solve y = -2x + 3 for x.

you want x on its own
first of lets start by getting -2x on its own
so you have -2x+3 what do you do to get rid of a +3?

Answer 2

Um...add? No...subtract or divide.
I think divide 2 and 3.

Answer 3

-2*

Answer 4

no

you have +3 so you want to do the opposite to the sign of the three
since you have a positive 3 to get rid of it you want to do the opposite which is subtract 3
but if you do this to the right side you must do it to the left side

so re write your equation

y-3=-2x+3-3

y-3=-2x

now you have -2x you want x on it's own so what do you do to go from -2x to x?

Answer 5

I divide x from -2?

Answer 6

no you divide by -2, remember, you want X on its own so you are trying to get rid of the -2

rewrite

(y-3)/-2 =-2x/-2
(y-3)/-2=x

Answer 7

Oh. Okay. Thank you.