Answer:
Opening: Opens upwards
Axis of Symmetry: -7/2
Vertex: (-7/2, -81/4)
X - intercepts: (1, 0) and (-8, 0)
Y - intercept: (0, -8)
Step-by-step explanation:
Opening: 'a' is greater than zero
Axis of Symmetry:
![\frac{-7}{2(1)} =\frac{-7}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B-7%7D%7B2%281%29%7D%20%3D%5Cfrac%7B-7%7D%7B2%7D)
Vertex:
![y= (\frac{-7}{2})^{2} +7(\frac{-7}{2}) -8\\y= (\frac{49}{4}) +(\frac{-49}{2}) -8\\y= \frac{49}{4} +\frac{-98}{4} -8\\y=\frac{-49}{4}-8\\y = \frac{-81}{4}](https://tex.z-dn.net/?f=y%3D%20%28%5Cfrac%7B-7%7D%7B2%7D%29%5E%7B2%7D%20%2B7%28%5Cfrac%7B-7%7D%7B2%7D%29%20-8%5C%5Cy%3D%20%28%5Cfrac%7B49%7D%7B4%7D%29%20%2B%28%5Cfrac%7B-49%7D%7B2%7D%29%20-8%5C%5Cy%3D%20%5Cfrac%7B49%7D%7B4%7D%20%2B%5Cfrac%7B-98%7D%7B4%7D%20-8%5C%5Cy%3D%5Cfrac%7B-49%7D%7B4%7D-8%5C%5Cy%20%3D%20%5Cfrac%7B-81%7D%7B4%7D)
X - intercepts:
(x-1)(x+8)
x = 1 and x = -8
Y - intercept: (0, -8)
![y= 0^{2} +7(0) -8\\\\y= -8\\](https://tex.z-dn.net/?f=y%3D%200%5E%7B2%7D%20%2B7%280%29%20-8%5C%5C%5C%5Cy%3D%20-8%5C%5C)
Answer:
3/4 or 0.75
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
7+5
Answer:
4.5
Step-by-step explanation:
8 + 7 + 6 + 5 + 4 + 3 + 2 + 1/8
36/8
=4.5