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