Question

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

Answer 1

y=8-2×
y=8-2(8)
y=8-16
y=-8

Answer 2

ANSWER

When
$x = 8$
$y = - 8$

EXPLANATION


The ordered pair in the table were generated with the function,
$y = 8 - 2x$


To find the value that corresponds to
$x = 8$

We substitute 8 in to the given function and simplify.



We obtain,

$y = 8 - 2(8)$

Let us multiply to obtain,

$y = 8 - 16$



We now simplify to get,
$y = - 8$


Therefore when x is 8 the value of y is -8.