Question

Find the constant of proportionality from the following graph:

• A. 4
• B. 3
• C. 0.5
• D. 1.5

Answer 1

The correct option is D 1.5

We know,
Constant of Proportionality = $\frac{\text{Change in y}}{\text{Change in x}}$

Let us consider the points (0,0) and (2,3).

Putting the values, we get,
Constant of proportionality = $\frac{3-0}{2-0}$
= $\frac{3}{2}$
= 1.5