Which of the following tables represents a function? A) x 2 2 3 3
y 5 -5 6 -6

B) x 4 -4 4 -4
y 1 2 3 4

C) x 6 6 7 7
y 2 3 4 5

D) x 2 -2 4 -4
y 8 8 12 12

B

Step-by-step explanation:

Every time the y-value increases by one, the function multiplies the x-value by -1

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13