Find the rate of change for the direct variation using the formula y = kx
Solve for k: 10 = k2
K = 10/2
K = 5
Now solve for y when x is 8:
Y = 5(8)
Y = 40
Answer:
-18
Step-by-step explanation:
-3 √2 * 3 √2
= -9 * (√2)²
= -9 * 2
= -18
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