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 freshener dispenses sprays?
fraction 4 over 30
fraction 30 over 4
fraction 30 over 16
fraction 16 over 30

Answer 1

4 over 30

May I have brainliest??

Hope This Helps!!

Answer 2

We are given points (30,4) , (60,8) and (90,12)

To calculate the rate per minute at which the air freshener dispenses sprays,

we can use two points to find slope.

The formula for slope is given by :

$slope = \frac{y2-y1}{x2-x1}$

let us use two points (60,8) and (90,12) to find the slope,

$slope = \frac{12-8}{90-60}$

Slope = 4/30

So the rate per minute at which the air freshener dispenses sprays is 4/30.

So first option is correct answer .