For a direct variation, f(x) = kx. Therefore, for f(x) = 30x, constant of variation (k) = 30.
Answer: 7
Step-by-step explanation:

The answer is 25 because
5*5=25
Answer: x = -4
Step-by-step explanation:
1/2 * (x - (-6)) = 1
distribute
1/2x + 3 = 1
isolate the variable
1/2x = -2
x = - 4
Answer:
(0, 75), (75, 0), (-75, 0), (0, -75)
Step-by-step explanation:
I used desmos graphing calculator. c: