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Chapter 1: Q. 68 (page 24)

If (a,-5)is a point on the graph of y=x2+6x, what is a?

Short Answer

Expert verified

The value ofais-5or-1.

Step by step solution

01

Given information

The given point is a,-5.

The given equation isy=x2+6x.

02

Step[ 2: Determine the value of a.

Substitute afor x, -5for yin y=x2+6x.

-5=a2+6aa2+6a+5=0a2+5a+a+5=0aa+5+1a+5=0a+1a+5=0a=-5,-1

03

Write the conclusion

The value ofais-5or-1.

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