Iam failing :
8) identify a horizontal or vertical stretch or compression of the function ƒ(x) = x^2 by observing the equation of the function g(x)=(1/4 x)^2
a) a vertical stretch by a factor of 4.
b) a horizontal stretch by a factor of 4.
c) a horizontal compression by a factor of 4.
d) a vertical compression by a factor of 4.
12) identify a transformation of the function f(x)=square root x by observing the equation of the function g(x)=square root x-87
a) a horizontal shift 87 units to the right.
b) a horizontal shift 87 units to the left.
c) a vertical shift 87 units downward.
d) a vertical shift 87 units upward.
13) evaluate the piecewise function at the indicated values from the domain:
f(x)= { [x], if x< -1 x^2, if -14
a) ƒ(-2) = 2
b) ƒ(−2) = −4
c) ƒ(-2) = -2
d) ƒ(-2) = 4
18) identify a transformation of the function f(x)=1/x by observing the equation of the function g(x)=1/3+3
a) a horizontal shift 3 units to the right.
b) a vertical shift 3 units upward.
c) a vertical shift 3 units downward.
d) a horizontal shift 3 units to the left.
attachment
this picture is for number 13