I have three questions that I need help answering I would really appreciate it if you did thanks.
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Answer:
see below
Step-by-step explanation:
27) y = kx
18 = k(20)
18 = 20k
k = 0.9
28) y = kx
-9 = k(3)
-9 = 3k
k = -3
y = -3x
29a) y = kx
5 = k(1/3)
5 = 1/3k
k = 15
y = 15x
29b) y = 15x
y = 15(-2)
y = -30