consider Which function is the result of vertically stretching f(x) = x2 - 7 by a...

Question

Question

consider

math algebra

Answer 1

Answer #1

when a function f(x) is streched verically by a factor a , it become af(x) .

when a function translate down by a factor c , then it becomes f(x)-c

here f(x)=x² -7

when it strech by a factor 2 , it becomes y=2x²-7 .

then on traslating by a factor 5 , it becomes 2x²-7-5= 2x²- 12

so answer is

C) y= 2x² -12

Answer 2

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