Answer to Question #56099 in Algebra for Bobby Bass

Question

12: Which function transforms the graph of y = x^2 so that it is first shifted down 4 units and is then reflected across the x-axis? Multiple answers may b e correct check all that apply.

y = -(x + 4)^2

y= (-x)^2 – 4
y= -x^2 – 4

y = -x^2 + 4


13: In the function y = ½ x^2 , what effect does the number ½ have on the graph, as compared to the graph of the function y = x^2? Multiple answers may be correct check all that apply.

It stretches the graph vertically by a factor of 2

It stretches the graph horizontally by the factor of 2

It shrinks the graph horizontally to ½ its original width

It shrinks the graph vertically to ½ its original height.

14: Express square root -144 in its simplest terms

Answer: ____


15: Express squareroot -75 in its simplest form.

A: 5i root 15

B: 3i root 5

C: 5i root 3

D: Can not be determined.