Consider the inequality y < -4x + 4. Which point (x, y) is a solution to the given inequality in the xy-plane?
A(0, 5)
B(-4, 0)
C(2, -1)
D(2, 1)
Answer & Solution
Correct answer: B. (-4, 0)
Test each point. For (-4, 0): 0 < -4(-4) + 4 = 20. TRUE. For (2,-1): -1 < -4(2)+4 = -4. FALSE. For (2,1): 1 < -4. FALSE. For (0,5): 5 < 4. FALSE. So D is the solution.
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