Question

The table shows ordered pairs of the function y = 8 - 2x. When x = 8, the value of y is ?

Answer 1

Substitute the value of x into the expression, 
y = 8 - 2x
y = 8 - 2(8)
y = 8 - 16
y = -8

In short, Your Answer would be -8

Hope this helps!