Question

Write the equation of the line parallel to the

y-axis and 7 units to the left of the y-axis.

PLEASE HELP!

Answer 1

x = -7

Explanation:

A line parallel to y-axis is a vertical line.

A vertical line has an equation x = a, where a is any real number.

The line is 7 units to the left of the y-axis. Therefore the equation of this line is x = -7 (look at the picture).

Answer 2

x=-7

Explanation:

If a line is parallel to the y-axis, then it is vertical because the y-axis is vertical.

A vertical line is in the form of x=a number.

Since the line we are looking for is 7 units to the left of the y-axis, then the line is x=-7. -7 is 7 units left of 0.

7 units right would have been x=7.