Answer:
y = -2x
Step-by-step explanation:
We have direct variation means
y =kx
We know y and x
10 = k (-5)
Solve for k by diving by -5
10/-5 = k (-5)/-5
-2 = k
General formula for direct proportion: y = kx, where k is the constant of proportionality. If y = 10 when x = -5, then 10 = -5k, and k = -2.
Then the desired relationship is y = -2x.
