Question

Which equation does not represent a line with an x-intercept of 3?

A) y = -2x + 6
B) y = -1/3 + 1
C) y = 2/3x - 2
D) y = 3x - 1

Answer 1

Answer: D. y=3x-1 does not =3

Explanation:

To find the x-intercept, we let y=0 and solve for x.

Using choice A:

0=-2x+6

2x=6

x=3

Using choice B:

0=− 1/3x + 1

1/3x = 1

x = 3

Using choice C:

0= 2/3x−2

−2/3x = -2

x=3

Using choice D:

0=3x-1

-3x=1

x=−1/3

So, the correct answer is choice D. Does NOT = 3