Question

The graph shows the number of sprays an automatic air freshener dispenses, y, in x minutes:

A graph is shown. On the x-axis, the values are from 0 till 150 in increments of 30 for each grid line, and on the y-axis, the values are from 0 to 20 in increments of 4 for each grid line. The title of the graph on the x-axis is Time in minutes, and the title on the y-axis is Number of Sprays. A line is shown connecting ordered pairs 30, 4 and 60, 8 and 90, 12 and 120,16. The title for the graph is Dispense Rate.

Which expression can be used to calculate the rate per minute at which the air fresh

Answer 1

it's just asking for the slope of the graph

Answer 2

pick 2 points and calculate the slope

Answer 3

would it be 4/30

Answer 4

yes