Question

The graph shows the number of paintballs, y, a machine launches in x seconds:

Which expression can be used to calculate the rate per second at which the machine launches the balls?

A. 32/4
B. 4/32
C. 128/4
D. 4/128

Answer 1

The answer is A I. My opinion

Answer 2

Option A is the correct answer i.e. 32/4

Explanation:

y represents the number of paintballs.

x represents the time in seconds.

Rate per second at which machine launches the balls would be the slope of the line in the given graph.

The formula for slope of the line is given by m = (y₂-y₁)/(x₂-x₁)

We can consider the points (4,32) and (8,64)

Slope = (64-32)/(8-4) = 32/4.

Hence, option A is the answer i.e. 32/4.