Register
If the maximum value of y =-x²+ax+b is 8 when x = 3, find the values of a and b​
83.1k views
23 votes
If the maximum value of y =-x²+ax+b is 8 when x = 3, find the values of a and b​

User Satevis
by
4.6k points

1 Answer

7 votes
y' = -2x+a
0 = -2(3)+a
6=a

8=-(3)^2 +(3)(6)+b
b=-1
User Aleksander Grzyb
by
5.2k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.8m questions

7.5m answers

Other Questions

Aliyah has $24 to spend on seven pencils. After buying them she had $10. How much did each pencil cost?
Evaluate a + b when a = –16.2 and b = –11.4 A. –27.6 B. –4.8 C. 4.8 D. 27.6
What is the value of x? (-4) - x = 5
Find the quotient of 3,078 ÷ 27. A) 104 B) 109 C) 114 D) 119
Can someone help me with 5??? ASAP?
Link Copied!