Question

is the graph of this equation a horizontal or vertical line?
x = 20
horizontal line vertical line

Explanation:

Step1: Recall line equation types

For a vertical line, the equation is of the form \( x = a \) (where \( a \) is a constant), meaning all points on the line have the same \( x \)-coordinate. For a horizontal line, the equation is \( y = b \) (where \( b \) is a constant), meaning all points have the same \( y \)-coordinate.

Step2: Analyze \( x = 20 \)

The equation \( x = 20 \) means every point on the line has an \( x \)-coordinate of 20, regardless of the \( y \)-value. This matches the form of a vertical line.

Answer:

vertical line