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Kindly help me with this. The answer in the textbook is a = 4 and I do not know how to solve the first question.

Kindly help me with this. The answer in the textbook is a = 4 and I do not know how to solve the first question. 

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Grade:9

1 Answers

Arun
25750 Points
3 years ago
Dear student
 
As we know that roots are 5 and -5 and parabola is downward
 
Hence
 
f(x) = - (x-5) (x+5)
 
Now we are given point (3,a) means x = 3
 
Hence
a = - (8) (-2) = 16
 
Hope you understand

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