Question

Which ordered pairs are solutions to the equation?

y = 2x + 5

A.
(5, 15) and (9, 2)

B.
(5, 10) and (2, 9)

C.
(5, 15) and (2, 9)

D.
(15, 5) and (2, 9)

Answer 1

when you plug in x = 5, what do you get for y?

Answer 2

15

Answer 3

what about x = 9? what is y when x = 9 ?

Answer 4

23

Answer 5

so (5,15) lies on the line

but (9,2) does NOT lie on the line

Answer 6

see how I'm getting this?

Answer 7

So it's C

Answer 8

good