Answer:
-4r
Step-by-step explanation:
Answer:
x=6
Step-by-step explanation:
Given the x-intercepts of a parabola: ![x_1=3, x_2=9](https://tex.z-dn.net/?f=x_1%3D3%2C%20x_2%3D9)
The equation of symmetry at the parabola's vertex is x=h
Where ![h=\dfrac{x_1+x_2}{2}](https://tex.z-dn.net/?f=h%3D%5Cdfrac%7Bx_1%2Bx_2%7D%7B2%7D)
In this case,
![h=\dfrac{3+9}{2}=6](https://tex.z-dn.net/?f=h%3D%5Cdfrac%7B3%2B9%7D%7B2%7D%3D6)
Therefore, the line of symmetry of the parabola is x=6 and is also the x-coordinate of the parabola's vertex.
Answer:31/73*100
=42%
Step-by-step explanation: