Please explain!
Giving 20 or 30 points!!
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Answer:
-90
Step-by-step 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.
Answer:
(d) -90
Step-by-step 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.