Question

Which equation would represent the line which contains the points (4,2) and (-3,2)?

y = -3x + 2

y = 4x + 2

y = 2

y = 0

Answer 1

y = 2

Explanation:

Points (4, 2) and (-3, 2) have the same y-coordinate, 2.

That means every point on the line has y-coordinate 2.

The line is horizontal.

The general equation of a horizontal line is

y = k,

where k is the y-coordinate of all points on the line.

Since the y-coordinate of all points on this line is 2, the equation is

y = 2