McGraw-Hill Education GRE 2019

SOLUTION: Plug each point into the equation. Whichever point keeps the

equation true will be your answer.

A: 7 = 7(3) + 3? → False

B: 3 = 7(7) + 3? → False

C: 0 = 7(3) + 3? → False

D: 17 = 7(2) + 3? → Tr ue

E: 2 = 7(17) + 3? → False

The correct answer is D.

Horizontal and Vertical Lines

Any horizontal line will have a slope of zero. Because such lines have no slope, they

will always be written in the form: y = b. For example, the equation for the line

below is y = 7.

y

x

y = 7

Any vertical line will have an undefined slope. Such lines will be written in the form:

x = a, where a represents the x-intercept of the line. For example, the equation for

the line below is x = 4.

y

x

x = 4

CHAPTER 13 ■ GEOMETRY 435

04-GRE-Test-2018_313-462.indd 435 12/05/17 12:06 pm