Question

Please explain!
Giving 20 or 30 points!!

Answer 1

(d) -90

Explanation:

The function can be simplified to ...

f(x) = -9(x +1)

This means any integer x will produce a y-value that is a multiple of 9. Among the answer choices, those are 90 and -90. We can try these to see if either of the x-values are in the table.

90 = -9(x +1)

-10 = x +1

-11 = x . . . . . not in the table

__

-90 = -9(x +1)

10 = x +1

9 = x . . . . . . . the first row of the table

The value -90 would be correctly found in the table.

Answer 2

-90

Explanation:

You would need to input each x value from the table into your equation in order to find the output (y value)

f(9) = -9(9) - 9 = -90

f(0) = -9(0) - 9 = -9

f(7) = -9(7) - 9 = -72

f(4) = -9(4) - 9 = -45

f(-9) = -9(-9) - 9 = 72

After plugging in all of these numbers, of the answer choices given, -90 would be correctly found in the table.