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Makovka662 [10]
2 years ago
9

Colin loves to play the piano but doesn't like practicing the exercises his piano teacher assigns. Colin

Mathematics
1 answer:
kati45 [8]2 years ago
3 0

The linear equation for the number of cookies he receives, for x hours practicing the piano, is:

y = x + 10

A <u>linear function</u> has the format given by:

y = mx + b

In which:

  • m is the slope, which is the rate of change.
  • b is the y-intercept, which is the value of y when x = 0.

In this problem:

  • We have two points: (5,15) and (10,20).
  • The slope is given by <u>change in y divided by change in x</u>, then:

m = \frac{20 - 15}{10 - 5} = \frac{5}{5} = 1

Then

y = x + b

Point (5,15) means that when x = 5, y = 15, which is used to find b.

15 = 5 + b

b = 10

The, the function is:

y = x + 10

A similar problem is given at brainly.com/question/16302622

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