Question

From the graph, the unit rate at which the production capacity per day is increasing is

• A. 2
• B. 3
• C. 4
• D. 6

Answer 1

The correct option is B 3

Consider the points on the graph - (1, 3) and (2, 6)
You know,
Unit rate = Slope =$\frac{changeiny}{changeinx}=\frac{y_2-y_1}{x_2-x_1}$

Putting the values, you get
$slope=\frac{6-3}{2-1}=\frac{3}{1}=3$

∴ The production capacity per day is increasing at the rate of 3 units.