The image of a parabolic mirror is sketched on a graph. The image can be represented using the function y = x2 + 2, where x represents the horizontal distance from the maximum depth of the mirror and y represents the depth of the mirror as measured from the x-axis. How far away from the maximum depth is a point on the mirror that is inches in depth?
3 inches
4 inches
5 inches
6 inch

Question

The image of a parabolic mirror is sketched on a graph. The image can be represented using the function y = x2 + 2, where x represents the horizontal distance from the maximum depth of the mirror and y represents the depth of the mirror as measured from the x-axis. How far away from the maximum depth is a point on the mirror that is  inches in depth?
3 inches
4 inches
5 inches
6 inch

mathmale · Answer

Have you, perchance, left out an important measurement here?  "that is  inches in depth"

atlantahdz · Answer

7/8