​Briana kicks a soccer ball into play from the corner of the field. The path of the ball can be modeled by a parabolic function. The ball reaches a maximum height of 9 yards when the ball is horizontally 20 yards from the corner. After the ball is kicked, how far will the ball be from the corner when it returns to the ground?all into play from the corner of the field.

the answer is 31.27mph

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

the answer is ! ?