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Chapter 2: Q. 5 (page 76)

Find a so that the point -1,2is on the graph offx=ax2+4.

Short Answer

Expert verified

The value of a is -2.

Step by step solution

01

Step 1. Given information

The given function is

fx=ax2+4

Need to find the value of aso that the point -1,2is on the graph.

02

Step 2. Solving for the value of a

Substitute x=-1and fx=2in the equationf(x)=ax2+4,

2=a-12+42=a1+4a=2-4=-2

The value of a is -2.

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