Question

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

Answer 1

Answer:

The expression that can be used to calculate the rate per second at which the machine launches the balls is fraction 20 over 4.

Step-by-step explanation:

The x-axis label is Time in seconds, and the x-axis values are from 0 to 20 in increments of 4 for each grid line.

And the y-axis label is Number of Balls and the y-axis values from 0 to 100 in increments of 20 for each grid line.

If the ordered pairs (4,20) and (8,40) are on the graph, then the slope of the line will be represented by  

$M = \frac{40 - 20}{8 - 4} = \frac{20}{4}$

Therefore, the expression that can be used to calculate the rate per second at which the machine launches the balls is fraction 20 over 4. (Answer)

Answer 2

Answer:

20/4

Step-by-step explanation:

if you look at the chart it is clearly showing that every 4 seconds it is shooting out 4 balls.