Be just a bit clearer, please: "find the vertex."
You could either "complete the square" or use the "quadratic formula."
Here the coefficients are a=-1, b=11 and c=-18. Because a is -, the curve opens downward and the vertex is on top, representing the function's maximum.
Use the quadratic formula with the coefficients given above.
-b plus or minus sqrt(b^2-4ac)
x = -------------------------------------------
2a
Answer:
Step-by-step explanation:
It is not a function because it does not pass the vertical line test. You can not have the same x in a function.
For each graph, create a table showing the rule and the values for X and y; (-2,2), (-1,1), (0,0), (1,-1), (2,-2)
Len [333]
Input (x) Output (y)
-2
2
-1
1
0
0
1 -1
2
-2
The number on the onthe left are the x value and the number on the right are the y value.