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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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