Question

Which of the following is a solution to the inequality below?-5x2 + 20x - 17 > y

A. (0, 0)
B. (2, 2)
C. (5, 2)
D. (1, 5)

Answer 1

The choices are points of a function that lies at coordinates (x,y). Just do trial and error with each choice and see which applies

a) x = 0, y = 0
-5(0)^2 + 20(0) - 17 > 0
-17 > 0 (not true)

b) x = 2, y= 2
-5(2)^2 + 20(2) - 17 > 2
3 > 2 (true)

c) x =5, y=2
-5(5)^2 + 20(5) - 17 > 2
-42 > 2 (not true)

d.) x=1, y=5
-5(1)^2 + 20(1) -17 > 5
-2 > 5 (not true)

So, the answer is B.