Question

Given the relation y = –4x2 – 8, if the input is 2, what is the output?

8
–8
–16
–24

Answer 1

- 24

Explanation:

Given

y = - 4x² - 8

The input is the value of x and the output the corresponding value of y.

Here input is 2 , substitute x = 2 into the relation, that is

y = - 4(2)² - 8 = - 4(4) - 8 = - 16 - 8 = - 24

For an input of 2, the output is - 24