Question

Which of the following equations represents a horizontal line?

A) y - 7
B) y = 2 - 5
C) I = 6
D) y = -2x + 8

Answer 1

The equation that represents a horizontal line is y = c, where c is a constant. Among the given options, the equation y = -2x + 8 is not a horizontal line.

Step-by-step explanation:

A horizontal line has a slope of 0, which means the y-coordinate remains the same for every x-coordinate. In other words, the equation will have the form y = c, where c is a constant. Looking at the given options, the equation that represents a horizontal line is D) y = -2x + 8. This equation has a coefficient of x, which means the line is not horizontal. The correct equation should have no x-term, indicating a horizontal line.