Which relation is not a function? 1) {(1, 5), (2, 6), (3, 6), (4, 7)}
2) {(4, 7), (2, 1), (−3, 6), (3, 4)}
3) {(−1, 6), (1, 3), (2, 5), (1, 7)}
4) {(−1, 2), (0, 5), (5, 0), (2, −1)}

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

the function makes a strait line horizontally with no x intercept but a y intercept at 9.

it is x=-4

step-by-step explanation:

f(x)=2/3x-8, which give g(x) the greatest value.

step-by-step explanation: