Answer to Question #55817 in Algebra for Butch DeLoria

Question

3: In the function y + 3 = (2x)^2 + 1, what effect does the number 2 have on the graph, as compared to the graph of y = x^2

A: It stretches the graph horizontally by a factor of 2
B: It shrinks the graph vertically to ½ the original height.
C: It stretches the graph vertically by a factor of 2
D: It shrinks the graph horizontally to ½ the original width.

4: Which of the following describes the non-rigid transformation in the function shown below?
Y + 5 = -2(x – 1 )^2

A: A graph is shifted 1 unit right
B: A graph is shifted 5 units down
C: A graph is reflected across the x-axis
D: A graph is stretched vertically by a factor of 2.