Which statement about the quadratic parent function is true?
A) Its graph is symmetrical about the x-axis.
B) Its graph is symmetrical about the y-axis.
C) Its domain is the set of all non-negative numbers.
D)Its range is the set of all real numbers.
The correct answer is B) its graph is symmetrical about the y-axis.
It is not symmetrical about the x-axis; you cannot "fold" the graph across the x-axis. Its domain is not the set of non-negative numbers; you can use negative numbers for x as well as positive. Its range is not the set of all real numbers; we cannot get a negative y-value from squaring a number.
The correct answer is Choice B. The graph is symmetrical about the y-axis.
The quadratic parent function is a parabola. It is shaped like the letter U. Therefore, you could draw a vertical line (y-axis) down the middle and it would be symmetrical.
