To find:
a. The centre and radius of the circle
b. The graph of the circle
c. Intercepts of the circle, if any
Answer to Problem 31AYU
Explanation of Solution
Given:
Equation of the circle
Calculation:-
Compare this equation with the equation .
The comparison yields the information about the circle. We see that and .
The circle has centre and a radius units. To graph the circle, first plot the centre . Since the radius is units, locate four points on the circle by plotting units to the left, to the right, up and down from the centre. These four points can be used to sketch the graph.
To find the , if any, let and solve for .
No .
To find , if any, let and solve for .
Subtract from both sides
.
Chapter 1 Solutions
Precalculus Enhanced with Graphing Utilities
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