Chapter 3

Introductory Algebra for College Students · 433 exercises

Problem 10

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(2 x+6 y=30\)

2 step solution

Problem 10

Find the slope and the \(y\) -intercept of the line with the given equation. $$y=7$$

2 step solution

Problem 11

Graph each inequality. $$x-y<5$$

4 step solution

Problem 11

plot the given point in a rectangular coordinate system. $$(-2,0)$$

3 step solution

Problem 11

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Slope \(=\frac{1}{2},\) passing through the origin

3 step solution

Problem 11

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(2 x-3 y=15\)

2 step solution

Problem 11

Find the slope and the \(y\) -intercept of the line with the given equation. $$y=4-x$$

3 step solution

Problem 12

Graph each inequality. $$x-y<2$$

4 step solution

Problem 12

plot the given point in a rectangular coordinate system. $$(-5,0)$$

3 step solution

Problem 12

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Slope \(=\frac{1}{3},\) passing through the origin.

2 step solution

Problem 12

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(4 x-5 y=10\)

2 step solution

Problem 12

Find the slope and the \(y\) -intercept of the line with the given equation. $$y=5-x$$

2 step solution

Problem 13

Graph each inequality. $$x+2 y>4$$

3 step solution

Problem 13

plot the given point in a rectangular coordinate system. $$(0,2)$$

3 step solution

Problem 13

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Slope \(=-\frac{2}{3},\) passing through \((6,-2).\)

3 step solution

Problem 13

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(-x+3 y=-8\)

2 step solution

Problem 13

Begin by solving the linear equation for \(y .\) This will put the equation in slope-intercept form. Then find the slope and the \(y\) -intercept of the line with this equation. $$-5 x+y=7$$

2 step solution

Problem 14

Graph each inequality. $$2 x+y>6$$

5 step solution

Problem 14

plot the given point in a rectangular coordinate system. $$(0,5)$$

4 step solution

Problem 14

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Slope \(=-\frac{3}{5},\) passing through \((10,-4)\)

5 step solution

Problem 14

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(-x+3 y=-10\)

2 step solution

Problem 14

Begin by solving the linear equation for \(y .\) This will put the equation in slope-intercept form. Then find the slope and the \(y\) -intercept of the line with this equation. $$-9 x+y=5$$

3 step solution

Problem 15

Graph each inequality. $$3 x-y \leq 6$$

3 step solution

Problem 15

plot the given point in a rectangular coordinate system. $$(0,-3)$$

3 step solution

Problem 15

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Passing through \((1,2)\) and \((5,10)\)

3 step solution

Problem 15

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(7 x-9 y=0\)

2 step solution

Problem 15

Begin by solving the linear equation for \(y .\) This will put the equation in slope-intercept form. Then find the slope and the \(y\) -intercept of the line with this equation. $$x+y=6$$

2 step solution

Problem 16

Graph each inequality. $$x-3 y \leq-6$$

3 step solution

Problem 16

plot the given point in a rectangular coordinate system. $$(0,-5)$$

4 step solution

Problem 16

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Passing through \((3,5)\) and \((8,15)\)

3 step solution

Problem 16

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(8 x-11 y=0\)

2 step solution

Problem 16

Begin by solving the linear equation for \(y .\) This will put the equation in slope-intercept form. Then find the slope and the \(y\) -intercept of the line with this equation. $$x+y=8$$

2 step solution

Problem 17

Graph each inequality. $$3 x-2 y \leq 8$$

4 step solution

Problem 17

plot the given point in a rectangular coordinate system. $$\left(\frac{5}{2}, \frac{7}{2}\right)$$

3 step solution

Problem 17

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Passing through \((-3,0)\) and \((0,3)\)

3 step solution

Problem 17

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(2 x=3 y-11\)

2 step solution

Problem 17

Begin by solving the linear equation for \(y .\) This will put the equation in slope-intercept form. Then find the slope and the \(y\) -intercept of the line with this equation. $$6 x+y=0$$

2 step solution

Problem 18

Graph each inequality. $$2 x-3 y \geq 8$$

3 step solution

Problem 18

plot the given point in a rectangular coordinate system. $$\left(\frac{7}{2}, \frac{5}{2}\right)$$

2 step solution

Problem 18

Find the \(x\)-intercept and the \(y\)-intercept of the graph of each equation. Do not graph the equation. \(2 x=4 y-13\)

2 step solution

Problem 18

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Passing through \((-2,0)\) and \((0,2)\)

3 step solution

Problem 18

Begin by solving the linear equation for \(y .\) This will put the equation in slope-intercept form. Then find the slope and the \(y\) -intercept of the line with this equation. $$8 x+y=0$$

2 step solution

Problem 19

Graph each inequality. $$4 x+3 y>15$$

3 step solution

Problem 19

plot the given point in a rectangular coordinate system. $$\left(-5, \frac{3}{2}\right)$$

3 step solution

Problem 19

Use intercepts and a checkpoint to graph equation. \(x+y=5\)

3 step solution

Problem 19

Write the point-slope form of the equation of the line satisfying each of the conditions in Exercises. Then use the point-slope form of the equation to write the slope-intercept form of the equation. Passing through \((-3,-1)\) and \((2,4)\)

3 step solution

Problem 19

Begin by solving the linear equation for \(y .\) This will put the equation in slope-intercept form. Then find the slope and the \(y\) -intercept of the line with this equation. $$3 y=6 x$$

3 step solution

Problem 20

Graph each inequality. $$5 x+10 y>15$$

3 step solution

Problem 20

plot the given point in a rectangular coordinate system. $$\left(-\frac{9}{2},-4\right)$$

4 step solution

Problem 20

Use intercepts and a checkpoint to graph equation. \(x+y=6\)

4 step solution

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