Question

Given the table of values below, which equation best represents the information?

x y
150 300
250 500
360 720
480 960

1 f ( x ) = x + 150
2 f ( x ) = 2 x
3 f ( x ) =
4 f ( x ) = 2 x - 100

Answer 1

1 x=150
2×=150
3×=300
4×=200

Answer 2

x = x + 150
x + x = 150
.:2x = 150
.:x = 150 / 2
= 75
3x = 75 × 3
= 225