Question

The height of an arch is modeled by the equation mc024-1.jpg. Which of the following gives the width of the arch at its base?



the y-coordinate of the vertex

double the x-coordinate of the vertex

the y-intercept of the equation

the difference between the zeroes

Answer 1

at the base, the height is 0
There are 2 points where height is 0, at either side of the arch
So width of arch = difference between the zeros