   Chapter 10.CR, Problem 14CR Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

Solutions

Chapter
Section Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

Draw the graph of 3 x + 7 y = 21 , and name the x -intercept a amd the y -intercept b .

To determine

To sketch:

The graph of 3x+7y=21, and name the x-intercept a and the y-intercept b.

Explanation

The given equation is 3x+7y=21.

The graph of the equation is drawn using graphing calculator.

To find the x-intercept substitute y=0.

3x+70=21

Simplifying,

3x=21

Dividing by 3.

33x=213

Cancelling the common factors,

x=7

Hence, the x-intercept is 7, 0.

To find the y-intercept substitute x=0

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