Answer:
9) y = 5x + 9
10) y = 2/3 x - 10
14) m = 0 and b = 3
15) slope=0
16) slope: undefined
18) slope = 5
Explanation:
18) (4,-6) and (7,9)
(9 - - 6)/(7-4) = (9+6)/3
= 15/3 = 5
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