October 19,2015

1.) Springboard Book2.) Math Journal3.) Pencils4.) Calculator

Warm-up(8.4C) The cost of a plumbing repair includes a $50 fee plus a cost of $15 per hour as shown in the table below.

1.) Write an equations, in the form of y= mx + b, that represents the cost C, in terms of the number of hours, h, you paid for the plumping repair.

C= 15h+50

2.)What is the slope?

15

3.) What is the y- intercept?

(0,50)

Hours worked Cost of repairin dollars

2 80

5 125

8 170

X y=x Y

-8

-4

-2

0

2

4

8

X y=x Y

-8

-4

0

4

8

X y=x Y

X y=x Y

-10 y=x -2

-5 y=x -1

0 y=x 0

5 y=x 1

10 y=x 2

X y=x Y

-8 y=x -4

-4 y=x -2

-2 y=x -1

0 y=x 0

2 y=x 1

4 y=x 2

8 y=x 4

X y=x Y

-8 y=x -2

-4 y=x -1

0 y=x 0

4 y=x 1

8 y=x 2

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