Question

For each of the following equations say whether it is a horizontal or vertical line and state the slope of the line.

1. x = - 2
2. y = -8
3. x = 15
4. y = -4

Answer 1

1. vertical line. slope is undefined.

2. horizontal line. slope of 0

3. vertical line. slope is undefined.

4. horizontal line. slope of 0

Explanation: