Question

Ellen thinks that if a line has no slope, then it never touches the y-axis. Which line proves that her statement is incorrect?

A. x = 0
B. y = 0
C. x = 1
D. y = 1

Answer 1

Option D

Explanation:

A horizontal line has no slope. The equation 'y=1' graphs as a horizontal line. It passes (0,1). So, it touches the y-axis.

A line with an undefined slope does not touch the y-axis. It is vertical.

Option D should be the correct answer.