Chapter 7

Elementary Algebra · 322 exercises

Problem 15

Graph the linear equations and inequalities. $$ 2 x-6=\frac{2}{5} $$

5 step solution

Problem 16

Graph the equations. $$ -2 x+3 y=-6 $$

5 step solution

Problem 16

For the following problems, find the equation of the line using the information provided. Write the equation in slope-intercept form. slope \(=\frac{2}{3}, \quad\) passes through (-1,2)

5 step solution

Problem 16

For the following problems, write the equation of the line using the given information in slope-intercept form. $$ m=8, y \text { -intercept }(0,1) $$

3 step solution

Problem 16

Solve the inequalities by graphing. $$ -2 x+4 y>0 $$

5 step solution

Problem 16

Graph the equations. $$ y=x $$

4 step solution

Problem 16

The slope, \(\mathrm{m}\), of a line is defined as the steepness of the line, and it is the number of units that \(y\) changes when \(x\) changes 1 unit.

3 step solution

Problem 16

For the following problems, graph the equations. $$ 4 y-x-12=0 $$

5 step solution

Problem 16

Graph the linear equations and inequalities. $$ x+7 \leq 12 $$

6 step solution

Problem 17

Graph the equations. $$ 2 y+x-8=0 $$

5 step solution

Problem 17

For the following problems, find the equation of the line using the information provided. Write the equation in slope-intercept form. slope \(=7, \quad\) passesthrough (0,0) .

4 step solution

Problem 17

For the following problems, write the equation of the line using the given information in slope-intercept form. $$ m=5, y \text { -intercept }(0,-3) $$

4 step solution

Problem 17

Graph the inequality \(-3 x+5 \geq-1\).

3 step solution

Problem 17

Graph the equations. $$ y=-x $$

3 step solution

Problem 17

The formula for finding the slope of a line through any two given points \(\left(x_{1}, y_{1}\right)\) and \(\left(x_{2}, y_{2}\right)\) is \(m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\)

3 step solution

Problem 17

For the following problems, graph the equations. $$ 2 x-y+4=0 $$

3 step solution

Problem 17

Graph the linear equations and inequalities. $$ y-5<3 $$

3 step solution

Problem 18

For the following problems, find the equation of the line using the information provided. Write the equation in slope-intercept form. passes through the points (5,2) and (2,1) .

4 step solution

Problem 18

For the following problems, write the equation of the line using the given information in slope-intercept form. $$ m=-6, y \text { -intercept }(0,-1) $$

4 step solution

Problem 18

Supply the missing word. The geometric representation (picture) of the solutions to an equation is called the ___________ of the equation.

3 step solution

Problem 18

Graph the equations. $$ 3 y-2 x=-3 $$

5 step solution

Problem 18

The fraction \(\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\) represents the \(\frac{\text { Change in } y}{\text { Change in } x}\).

5 step solution

Problem 18

For the following problems, graph the equations. $$ -2 x+5 y=0 $$

6 step solution

Problem 18

Graph the linear equations and inequalities. $$ x+19>2 $$

3 step solution

Problem 19

Graph the equations. $$ 3 y-4 x+12=0 $$

3 step solution

Problem 19

For the following problems, write the equation of the line using the given information in slope-intercept form. $$ m=-4, y \text { -intercept }(0,0) $$

4 step solution

Problem 19

As we look at a graph from left to right, lines with positive slope rise and lines with negative slope decline.

3 step solution

Problem 19

For the following problems, graph the equations. $$ y-5 x+4=0 $$

3 step solution

Problem 19

Graph the linear equations and inequalities. $$ z+5>11 $$

3 step solution

Problem 20

Graph the equations. $$ y=-3 $$

4 step solution

Problem 20

For the following problems, write the equation of the line using the given information in slope-intercept form. $$ m=-\frac{3}{2}, y \text { -intercept }(0,0) $$

3 step solution

Problem 20

Graph the equation \(y=-3 x+2\).

4 step solution

Problem 20

Graph the equations. $$ x+y=0 $$

3 step solution

Problem 20

Parallel lines have the same slope.

5 step solution

Problem 20

For the following problems, graph the equations. $$ 0 x+y=3 $$

5 step solution

Problem 20

Graph the linear equations and inequalities. $$ 3 m-7 \leq 8 $$

2 step solution

Problem 21

Graph the equations. $$ y-2=0 $$

4 step solution

Problem 21

For the following problems, write the equation of the line using the given information in slope-intercept form. $$ m=3,(1,4) $$

4 step solution

Problem 21

Write the equation of the line that has slope 4 and passes through the point (-1,2) .

4 step solution

Problem 21

Solve the inequality \(2-4 x \geq x-3\).

3 step solution

Problem 21

Horizontal lines have 0 slope.

4 step solution

Problem 21

For the following problems, graph the equations. $$ 0 x+2 y=2 $$

3 step solution

Problem 21

Graph the linear equations and inequalities. $$ -5 t \geq 10 $$

2 step solution

Problem 22

Graph the equations. $$ x=4 $$

3 step solution

Problem 22

For the following problems, write the equation of the line using the given information in slope-intercept form. $$ m=1,(3,8) $$

3 step solution

Problem 22

Graph the inequality \(y+3>1\).

4 step solution

Problem 22

Vertical lines have undefined slope (or no slope).

4 step solution

Problem 22

For the following problems, graph the equations. $$ 0 x+\frac{1}{4} y=1 $$

3 step solution

Problem 23

Graph the equations. $$ x+1=0 $$

2 step solution

Problem 23

For the following problems, write the equation of the line using the given information in slope-intercept form. $$ m=2,(1,4) $$

3 step solution

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