   Chapter 10.5, Problem 30E 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

In Exercises 27 to 32, use graphing to find the point of intersection of the two lines. Use Example 8 as a guide. 1 2 x + y = - 3 and 3 4 x - y = 8 .

To determine

Find the point of intersection of the two lines 12x+y=-3 and 34x-y=8 using graphs.

Explanation

The slope m and the y intercept b of a line y=mx+b are used to graph the given equations.

Rearrange 12x+y=-3 into y=mx+b as follows,

Move 12x to the right side of the equation.

So,

y=-12x-3

The graph of y=-12x-3 is a line with y-intercept b=-3 and slope m=-12

Rearrange 34x-y=8 into y=mx+b as follows,

Move 34x to the right side of the equation

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