Answer:
60.75
Step-by-step explanation:
The path of the ball is an illustration of absolute equation.
The equation of the path is: ![y =- \frac{12}7|x- 4.8| + 6.4](https://tex.z-dn.net/?f=y%20%3D-%20%5Cfrac%7B12%7D7%7Cx-%204.8%7C%20%2B%206.4)
The given parameters are:
--- the vertex (i.e. the point where the ball hits the wall)
![(x_1,y_1) = (2,1.6)](https://tex.z-dn.net/?f=%28x_1%2Cy_1%29%20%3D%20%282%2C1.6%29)
![(x_2,y_2) = (7.6,1.6)](https://tex.z-dn.net/?f=%28x_2%2Cy_2%29%20%3D%20%287.6%2C1.6%29)
An absolute function is represented as:
![y = a |x - h| + k](https://tex.z-dn.net/?f=y%20%3D%20a%20%7Cx%20-%20h%7C%20%2B%20k)
Substitute ![(h,k) = (4.8,6.4)](https://tex.z-dn.net/?f=%28h%2Ck%29%20%3D%20%284.8%2C6.4%29)
![y = a |x - 4.8| + 6.4](https://tex.z-dn.net/?f=y%20%3D%20a%20%7Cx%20-%204.8%7C%20%2B%206.4)
Substitute
for x and y
![1.6 = a|2 - 4.8| + 6.4](https://tex.z-dn.net/?f=1.6%20%3D%20a%7C2%20-%204.8%7C%20%2B%206.4)
![1.6 = a|- 2.8| + 6.4](https://tex.z-dn.net/?f=1.6%20%3D%20a%7C-%202.8%7C%20%2B%206.4)
Remove absolute bracket
![1.6 = 2.8a + 6.4](https://tex.z-dn.net/?f=1.6%20%3D%202.8a%20%2B%206.4)
Collect like terms
![2.8a = -6.4+1.6](https://tex.z-dn.net/?f=2.8a%20%3D%20-6.4%2B1.6)
![2.8a =- 4.8](https://tex.z-dn.net/?f=2.8a%20%3D-%204.8)
Solve for a
![a =-\frac{4.8}{2.8}](https://tex.z-dn.net/?f=a%20%3D-%5Cfrac%7B4.8%7D%7B2.8%7D)
Simplify
![a =-\frac{12}{7}](https://tex.z-dn.net/?f=a%20%3D-%5Cfrac%7B12%7D%7B7%7D)
Substitute
in ![y = a |x - 4.8| + 6.4](https://tex.z-dn.net/?f=y%20%3D%20a%20%7Cx%20-%204.8%7C%20%2B%206.4)
![y =- \frac{12}7|x- 4.8| + 6.4](https://tex.z-dn.net/?f=y%20%3D-%20%5Cfrac%7B12%7D7%7Cx-%204.8%7C%20%2B%206.4)
Hence, the equation of the path is: ![y =- \frac{12}7|x- 4.8| + 6.4](https://tex.z-dn.net/?f=y%20%3D-%20%5Cfrac%7B12%7D7%7Cx-%204.8%7C%20%2B%206.4)
See attachment for graph that models the path
Read more about absolute equations at:
brainly.com/question/2166748