Answer: -3
Step-by-step explanation:
y = mx + b (slope intercept formula)
9x - 3y = -54
-3y = 9x - 54
Divide all by -3
y = -3x + 18
Slope = -3
Hope this helps!
2^3= 8
15-7= 8
4/2= 2
8 * 8 * 2
64 * 2
answer: 128