Question

The points (80, 20) and (120, 30) form a proportional relationship. What is the slope of the line that passes through these points?

A) 14
B) 4
C) 10
D) 40

Answer 1

The slope of the line that passes through these points is: 1/4

What is the slope of the line?

The formula for the slope of a line between two coordinates is:

m = (y₂ - y₁)/(x - x₁)

We are given the coordinates as: (80, 20) and (120, 30)

Thus:

Slope = (30 - 20)/(120 - 80)

Slope = 10/40

Slope = 1/4