2. A plumber charges $60 to make a house call and $25 per hour for the time he works to fix the problem. If he works 3 hours, how much does he charge? (Hours worked vs. Charge)

$135 in total.

Step-by-step explanation:

A plumber charges a one-time down payment of $60, and $25 per hour.

He works 3 hours. Multiply his cost per hour with the amount of hours he worked:

3 x 25 = 75

Now, add the number gotten with his one-time payment:

75 + 60 = 135

$135 is how much he charges.

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step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is