Chapter 5

Algebra 1: Concepts and Skills · 266 exercises

Problem 28

Write in point-slope form the equation of the line. Then rewrite the equation in slope-intercept form. $$ (5,-12), m=-11 $$

4 step solution

Problem 28

Write in standard form an equation of the line that passes through the given point and has the given slope. \((5,-8), m=\frac{1}{2}\)

3 step solution

Problem 28

Write in slope-intercept form the equation of the line that passes through the given points. $$ (1,4) \text { and }(-1,-4) $$

4 step solution

Problem 29

Write in point-slope form the equation of the line. Then rewrite the equation in slope-intercept form. $$ (1,4), m=2 $$

2 step solution

Problem 29

Write in standard form an equation of the line that passes through the given point and has the given slope. \((7,3), m=-\frac{1}{3}\)

3 step solution

Problem 29

Write in slope-intercept form the equation of the line that passes through the given points. $$ (2,-3) \text { and }(-3,7) $$

3 step solution

Problem 30

Write in point-slope form the equation of the line. Then rewrite the equation in slope-intercept form. $$ (-2,4), m=3 $$

3 step solution

Problem 30

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((4,0),(0,5)\)

3 step solution

Problem 30

Write in slope-intercept form the equation of the line that passes through the given points. $$ (2,2) \text { and }(-7,-7) $$

3 step solution

Problem 31

Use the following information. You are buying vegetables to make a vegetable tray for a party. You buy 10 dollars worth of cauliflower and broccoli. The cauliflower costs 2 dollars per pound and the broccoli costs 1.25 dollars per pound. Write an equation in standard form that represents the different amounts (in pounds) of cauliflower \(C\) and broccoli \(B\) that you could buy.

3 step solution

Problem 31

Write in point-slope form the equation of the line. Then rewrite the equation in slope-intercept form. $$ (-5,-5), m=-2 $$

3 step solution

Problem 31

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((-3,0),(0,2)\)

3 step solution

Problem 31

Write in slope-intercept form the equation of the line that passes through the given points. $$ (6,-4) \text { and }(2,8) $$

3 step solution

Problem 32

Write in point-slope form the equation of the line. Then rewrite the equation in slope-intercept form. $$ (6,2), m=\frac{1}{2} $$

3 step solution

Problem 32

Write in slope-intercept form the equation of the line passing through the given point and perpendicular to the given line. $$ (2,6), y=-\frac{1}{2} x+4 $$

3 step solution

Problem 32

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((0,0),(2,0)\)

3 step solution

Problem 33

Write in point-slope form the equation of the line. Then rewrite the equation in slope-intercept form. $$ (-1,1), m=-\frac{1}{3} $$

2 step solution

Problem 33

Write in slope-intercept form the equation of the line passing through the given point and perpendicular to the given line. $$ (0,3), y=\frac{7}{8} x $$

3 step solution

Problem 33

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((0,1),(1,-1)\)

3 step solution

Problem 34

Write in point-slope form the equation of the line. Then rewrite the equation in slope-intercept form. $$ (4,-2), m=\frac{1}{4} $$

2 step solution

Problem 34

Write in slope-intercept form the equation of the line passing through the given point and perpendicular to the given line. $$ (0,0), y=-\frac{1}{4} x-7 $$

3 step solution

Problem 34

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((-4,0),(0,-5)\)

3 step solution

Problem 35

You and a friend have 30 dollars to spend at a health center. It costs 10 dollars an hour to use the racquetball court and 5 dollars an hour to use the tennis court. Which equation represents the number of hours you can spend on each court? Let \(x\) represent the number of hours on the racquetball court and \(y\) represent the number of hours on the tennis court. A. \(5 x+10 y=30\) B. \(10 x+5 y=30\) C. \(5 y=10 x-30\) D. \(y=5 x+6\)

5 step solution

Problem 35

Write in slope-intercept form the equation of the line that is parallel to the given line and passes through the given point. $$ y=2 x-11,(3,4) $$

3 step solution

Problem 35

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((-4,1),(2,-5)\)

4 step solution

Problem 36

Your basketball team scores 84 points with no 3 -point baskets. Each free throw \(x\) is worth 1 point. Each field goal \(y\) is worth 2 points. Which equation relates the number of free throws with the number of field goals? F. \(y=2 x+1\) G. \(x+y=84\) H. \(2 x+y=84\) J. \(x+2 y=84\)

3 step solution

Problem 36

Write in slope-intercept form the equation of the line that is parallel to the given line and passes through the given point. $$ y=-\frac{3}{5} x+6,(-2,7) $$

3 step solution

Problem 36

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((9,-2),(-3,2)\)

3 step solution

Problem 37

Evaluate the numerical expression. $$6-3 \cdot 2$$

2 step solution

Problem 37

Write in slope-intercept form the equation of the line that is parallel to the given line and passes through the given point. $$ y=\frac{1}{3} x+4,(-4,-4) $$

3 step solution

Problem 37

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((-3,3),(7,2)\)

3 step solution

Problem 38

Evaluate the numerical expression. $$12 \div 3-3 \cdot 1$$

3 step solution

Problem 38

Write in slope-intercept form the equation of the line that is parallel to the given line and passes through the given point. $$ y=7 x-1,(8,0) $$

3 step solution

Problem 38

Write in standard form an equation of the line that passes through the two points. Use integer coefficients. \((4,-7),(5,-1)\)

3 step solution

Problem 39

Evaluate the numerical expression. $$4^{2}-6 \cdot(4+7)$$

5 step solution

Problem 39

Write in slope-intercept form the equation of the line that is parallel to the given line and passes through the given point. $$ y=-9 x-3,(0,-5) $$

3 step solution

Problem 40

Convert the units. 5 days to hours

3 step solution

Problem 40

Write in slope-intercept form the equation of the line that is parallel to the given line and passes through the given point. $$ y=\frac{1}{2} x,(8,-10) $$

3 step solution

Problem 40

Complete the statement with always, sometimes, or never. A horizontal line is ____ perpendicular to a vertical line.

3 step solution

Problem 40

At sea level, the speed of sound in air is linearly related to the air temperature. If the temperature is \(35^{\circ} \mathrm{C},\) sound will travel at a rate of 352 meters per second. If the temperature is \(15^{\circ} \mathrm{C},\) sound will travel at a rate of 340 meters per second. Given the points \((35,352)\) and \((15,340),\) write in slope-intercept form the equation of the line that models this relationship.

3 step solution

Problem 41

Convert the units. 36 inches to feet

3 step solution

Problem 41

Complete the statement with always, sometimes, or never. The product of the slopes of two nonvertical perpendicular lines is ____ 1.

3 step solution

Problem 41

What is the equation of the line that passes through the points \((7,4)\) and \((-5,-2) ?\) A. \(y=\frac{1}{2} x-\frac{1}{2}\) B. \(y=-\frac{1}{2} x+\frac{1}{2}\) C. \(y=-\frac{1}{2} x-\frac{1}{2}\) D. \(y=\frac{1}{2} x+\frac{1}{2}\)

3 step solution

Problem 42

Convert the units. 12 years to months

3 step solution

Problem 42

Complete the statement with always, sometimes, or never. The line \(y=2 x+3\) is _____ perpendicular to a line with slope \(-2\)

3 step solution

Problem 43

Solve the equation. $$ 4 x-11=-31 $$

3 step solution

Problem 44

Write in slope-intercept form the equation of line that passes through the given points. \(m=0, b=7\)

3 step solution

Problem 44

At the end of the eighteenth century Benjamin Banneker was recommended by Thomas Jefferson to help lay out the new capital, Washington, D.C. As you can see in the map below, the city is laid out in a grid system of perpendicular streets. Assuming the \(x\) -axis is \(\mathrm{F}\) Street and the \(y\) -axis is 16 th Street, what is the equation of the line that passes through the point \((-4,1)\) and is perpendicular to 13 th Street \((x=3) ?\)

3 step solution

Problem 44

Using the point \((40,32.5)\) and the slope \(0.455,\) write the equation in point-slope form that models this situation. Then rewrite the equation in slope-intercept form.

3 step solution

Problem 44

Solve the equation. $$ 5 x-7+x=19 $$

2 step solution

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