Which functions are not linear? Select three such functions. A y=3x2+1y=3x^{2}+1y=3x 2 +1 B y=5−x2y=5-x^{2}y=5−x 2 C y=x5y=\frac{x}{5}y= 5 x D y=−5x−2y=-5x-2y=−5x−2 E −3x+2y=4-3x+2y=4−3x+2y=4 F y=x3y=x^{3}y=x 3

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answer: c. is your answer

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let f (x ) is a function and c be a positive real number,   the graph of the function g (x ) = f (cx ) is represented as follows.

when, c > 1,   the function compresses it in the x - direction.

when, 0 < c < 1, the function stretches it.

the function is g ( x ) = (9x )2.

the heighest power of x in g ( x ) = (9x )2 is 2, so the parent function is square function.

the equation of parent function is f ( x ) = x 2 .

the function is g ( x ) = (9x )2 and the parent function is f ( x ) = x 2 .

so, the functions f and g have the following relationship.

g ( x ) = f ( 9x ).

compare the function g ( x ) = f ( 9x ) with g (x ) = f (cx ).

c = 9 ( > 1 ).

so, the function g (x ) = (9x )2 compresses it in the x - direction.

step-by-step explanation:

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