What is the value of the function y= 1/8x-13 when x=-4?

Question

13.5

-15

-12.5

-16

Answer 1

To find the value of the function y = (1/8)x - 13 when x = -4, substitute -4 in place of x in the equation:

y = (1/8)(-4) - 13
= -4/8 - 13
= -1/2 - 13
= -1/2 - 26/2
= -27/2
≈ -13.5

Therefore, the value of the function is approximately -13.5. The correct option is 13.5.