Chapter 7

Elementary Algebra · 322 exercises

Problem 1

For the following problems, construct a coordinate system and graph the inequality. $$ -6 x+4>-14 $$

4 step solution

Problem 1

Solve the following inequalities by graphing. $$ -3 x+2 y \leq 4 $$

6 step solution

Problem 1

Find the equation of each line given the following information. Use the slope- intercept form as the final form of the equation. $$ m=5, y \text { -intercept }(0,8) $$

3 step solution

Problem 1

Use the \(y\) -intercept and the slope to graph each line. $$ y=\frac{-2}{3} x+4 $$

4 step solution

Problem 1

The following equation are in slope-intercept form. In each case, specify the slope and \(y\) -intercept. $$ y=2 x+7 ; \quad m=\quad b= $$

5 step solution

Problem 1

Graph \(3 x+y=3\) using the intercept method.

3 step solution

Problem 1

Plot the ordered pairs. $$ (1,3),(4,-5),(0,1),(-4,0) $$.

6 step solution

Problem 1

Graph the equation \(4 x+1=-7\).

2 step solution

Problem 2

Graph the equations and inequalities. $$ 4 x-3=-7 $$

2 step solution

Problem 2

For the following problems, construct a coordinate system and graph the inequality. $$ -8

6 step solution

Problem 2

Solve the following inequalities by graphing. $$ x-4 y<4 $$

5 step solution

Problem 2

Find the equation of each line given the following information. Use the slope- intercept form as the final form of the equation. $$ m=-8, y \text { -intercept }(0,3) $$

4 step solution

Problem 2

Use the \(y\) -intercept and the slope to graph each line. $$ y=\frac{3}{4} x $$

4 step solution

Problem 2

The following equation are in slope-intercept form. In each case, specify the slope and \(y\) -intercept. $$ y=-4 x+2 ; \quad m=\quad b= $$

4 step solution

Problem 2

Plot the following ordered pairs. $$ (8,2),(10,-3),(-3,10),(0,5),(5,0),(0,0),\left(-7,-\frac{3}{2}\right) $$

8 step solution

Problem 2

Graph the inequality \(3 x \leq 18\).

3 step solution

Problem 3

Plot the ordered pairs (3,1),(-2,4),(0,5),(-2,-2) .

6 step solution

Problem 3

Solve the following inequalities by graphing. $$ 3 x+y>0 $$

5 step solution

Problem 3

Find the equation of each line given the following information. Use the slope- intercept form as the final form of the equation. $$ m=2, y \text { -intercept }(0,-7) $$

3 step solution

Problem 3

Graph the equations. $$ y=\frac{2}{3} x+1 $$

5 step solution

Problem 3

The following equation are in slope-intercept form. In each case, specify the slope and \(y\) -intercept. $$ y=-5 x-1 ; \quad m=\quad b= $$

4 step solution

Problem 3

$$ x+2 y=6 $$

3 step solution

Problem 3

Graph the inequality \(-3 m+1<13\).

3 step solution

Problem 4

Solve the following inequalities by graphing. $$ x \geq 1 $$

5 step solution

Problem 4

Graph the equations. $$ y=\frac{1}{4} x-2 $$

4 step solution

Problem 4

The following equation are in slope-intercept form. In each case, specify the slope and \(y\) -intercept. $$ y=\frac{2}{3} x-10 ; \quad m=\quad b= $$

3 step solution

Problem 4

Using ordered pair notation, what are the coordinates of the origin?

3 step solution

Problem 4

Graph the inequality \(-3 \leq x-5<5\).

4 step solution

Problem 5

What is the geometric structure of the graph of all the solutions to the equation \(2 y+3 x=-4 ?\)

3 step solution

Problem 5

Solve the inequalities by graphing. $$ y

5 step solution

Problem 5

Find the equation of each line given the following information. Use the slope- intercept form as the final form of the equation. $$ m=-1, y \text { -intercept }(0,-10) $$

3 step solution

Problem 5

Graph the equations. $$ y=5 x-4 $$

4 step solution

Problem 5

The following equation are in slope-intercept form. In each case, specify the slope and \(y\) -intercept. $$ y=\frac{-5}{8} x+\frac{1}{2} ; \quad m=\quad b= $$

4 step solution

Problem 5

Graph \(y=2\).

4 step solution

Problem 5

We know that solutions to linear equations in two variables can be expressed as ordered pairs. Hence, the solutions can be represented as points in the plane. Consider the linear equation \(y=\) \(2 x-1\). Find at least ten solutions to this equation by choosing \(x\) -values between -4 and 5 and computing the corresponding \(y\) -values. Plot these solutions on the coordinate system below. Fill in the table to help you keep track of the ordered pairs.

4 step solution

Problem 5

Graph the linear equation \(-6 y=480\).

4 step solution

Problem 6

In what form is the linear equation in two variables \(a x+b y=c ?\)

4 step solution

Problem 6

Solve the inequalities by graphing. $$ x+y \leq 1 $$

4 step solution

Problem 6

Find the equation of each line given the following information. Use the slope- intercept form as the final form of the equation. $$ m=4, \text { the point }(5,2) $$

3 step solution

Problem 6

Graph the equations. $$ y=-\frac{6}{5} x-3 $$

4 step solution

Problem 6

The following equation are in slope-intercept form. In each case, specify the slope and \(y\) -intercept. $$ y=-3 x ; \quad m=\quad b= $$

4 step solution

Problem 6

Graph \(x=-4\)

4 step solution

Problem 6

Graph the linear equations and inequalities. $$ 4 x+7=19 $$

4 step solution

Problem 7

Graph the equations and inequalities. $$ 3 x+4 \leq 12 $$

4 step solution

Problem 7

In what form is the linear equation in two variables \(y=m x+b ?\)

4 step solution

Problem 7

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

4 step solution

Problem 7

Find the equation of each line given the following information. Use the slope- intercept form as the final form of the equation. $$ m=-6, \text { the point }(-1,0) $$

4 step solution

Problem 7

Graph the equations. $$ y=\frac{3}{2} x-5 $$

4 step solution

Problem 7

Graph the linear equations and inequalities. $$ 8 x-1=7 $$

3 step solution

Problem 8

Graph the equations and inequalities. $$ -16 \leq 5 x-1 \leq-11 $$

5 step solution

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