Which function represents the proportional relationship shown in the graph?

Question

A line is drawn on the coordinate plane. The line passes through the origin and the point left-parenthesis 2 comma 1 right-parenthesis.

y equals one-half x

y = 2x

y = x – 1

y = x − 2

Answer 1

The correct function that represents the proportion relationship shown in the graph is:
y = 1/2x

This is because the line passes through the origin and the point (2,1), which indicates a proportional relationship with a slope of 1/2.