## Keith applies a new brand of fertilizer to his grass. He finds that the rate at which the grass grows can be modeled by a linear functi

Question

Keith applies a new brand of fertilizer to his grass.

He finds that the rate at which the grass grows can be modeled by a linear function

He observes that the rate of growth is 1 centimeter every 3 days.

After 18 days, he measures the height of the grass to be 8 centimeters

The initial height of the grass was centimeters tall.

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Math
3 weeks
2021-09-08T09:20:27+00:00
2021-09-08T09:20:27+00:00 1 Answer
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## Answers ( )

Answer:Explanation:A

linear functioncan be expressed by its slope-intercept form:Where m is the slope and b is the y-intercept.

The slope is the rate of change of the dependent variabe, y, the height in this case, per unit of the independent variable, x, the number of days in this case:

Using the values y = 18 days and x = 8cm, you can find the y-intercept:

The initial height of the was is the height when x = 0, i.e. the same y-intercept, b: 2cm.