Question

The ordered pairs (2, -11) and (5, -20) are solutions to which of the following equations?

y = 3x - 5
y = -3x + 5
y = 3x + 5
y = -3x - 5

Answer 1

Do you know where to start? @Anon101

Answer 2

well i know that you have to put the x in the equation

Answer 3

maybe i can do it and you can check my answer?

Answer 4

Yes the 2 is the X so you put 2 where the variable X is at and then solve the equation. @Anon101 and sure ok

Answer 5

y = -3x - 5
y = -3x2 - 5 = -11 yes
y = -3x5 - 5 = -20 yes

(2, -11) (5, -20)

Answer 6

is this correct?

Answer 7

I belive its the last one because if you plug 2 into where the X is at then multiply -3 times 2 you would get -6 then subtract 5 you would get -11. Which in the coordinate pairs y does equal -11. And if you substitute for the next 2 numbers they will equal out too :) @Anon101

Answer 8

Yup! :) @Anon101

Answer 9

thanks! :D