# Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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 Algebra: Linear Equations, Graphs, Slope Solvers Lessons Answers archive Quiz In Depth

 Question 120681: Solve the following system by substitution 4x-12y=5 -x+3y=-1 Click here to see answer by jim_thompson5910(28504)

 Question 120643: Find values for m and b in the following system so that the solution to the system is (-3,4) 5x+7y=b mx+y=22 Click here to see answer by nabla(475)

 Question 120730: 2. Find the slope of any line perpendicular to the line through points (0, 5) and (-3, -4). Click here to see answer by jim_thompson5910(28504)

 Question 120733: For the floor plans given in execrise 27, determine wether the side through the points (2,3) and (11,6) is perpendicular to the side through the points (2,3) and (-3,18). Click here to see answer by jim_thompson5910(28504)

 Question 120675: Jill has \$3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have? Click here to see answer by rapaljer(4667)

 Question 120778: pls help A slope passing through (9,15) and (2,y) is parallel to a line with slope 2. What is the value of y? Click here to see answer by checkley71(8403)

 Question 120677: A coffee merchant has coffee beans that sell for \$9 per pound and \$12 per pound. The two types are to be mixed to create 100lb of a mixture that will sell for \$11.25 per pound. How much of each type of bean should be used in the mixture? Click here to see answer by ankor@dixie-net.com(15638)

 Question 120805: A small firm produces both AM and AM/FM car radios. The AM takes 15h to produce, and the AM/FM radios take 20h. The number of production hours is limited to 300h per week. The plant's capacity is limited to a total of 18 radios per week and existing orders require that at least 4 AM radios and at least 3 AM/FM radios be produced per week. Write a system of inequalities representing this situation. Click here to see answer by ankor@dixie-net.com(15638)

 Question 120829: If the slop of a line is 4/5 and the y-intercept is 3, what is the linear equation in the slop-intercept form? Click here to see answer by jim_thompson5910(28504)

 Question 120834: A store can purchase shirts for \$7 each. It has fixed costs of \$2,500. Each shirt is sold for \$18. 1. Write a linear equation for both cost and revenue. 2. Graph both cost line and revenue line. 3. Determine the break-even point. 4. If the store wants to make a profit of \$2,000, how many shirts must it sell? Textbook is McDougal Littell Algebra 1 Chapter 5 Resource Book Page 19 Click here to see answer by ankor@dixie-net.com(15638)

 Question 120888: A pump removes 1000 gal of water from a pool at a constant rate of 50 gal/min. a. Write an equation to find the amount of water y in the pool after t minutes. b. Graph the equation and interpret the t- and the y-intercepts. Click here to see answer by stanbon(57246)

 Question 120905: Adult tickets for a play cost \$20 and child tickets cost \$8. If there were 33 people at a performance and the theater collected \$468 from ticket sales, how many adults and how many children attended the play? Click here to see answer by checkley71(8403)

 Question 120918: The difference of two numbers is 11. The second is 8 less than 2 times the first. What are the two numbers? Click here to see answer by checkley71(8403)

 Question 120928: I need help with the square root property (y+2)2-49=0 Click here to see answer by stanbon(57246)

 Question 120930: I need help with this Amy travels 450 miles at certain speed. If the car had gone 15 mph faster, the trip would have taken 1 hour less. I need to find amy's speed. Click here to see answer by ankor@dixie-net.com(15638)

 Question 120914: A small company produces both bouquets and wreaths of dried flowers. The bouquets take 1 hour of labor to produce, and the wreaths takes 2 hours. The labor available is limited to 80 hours per week, and the total production capacity is 60 items per week. Write a system of inequalities representing this situation, where x is the number of bouquets and y is the number of wreaths. Then graph the system of inequalities. Click here to see answer by ankor@dixie-net.com(15638)

 Question 121058: a roof rises 8.25 ft over a horizontal distance of 14.65 ft. what is the slope of the roof to the nearest hundredth? Click here to see answer by MathLover1(6622)

 Question 121051: Write the equation of the line with x-intercept(-5,0) and undefined slope. (a) y=-5 (b) x=-5 (c) y=-5x (d) x=0 Click here to see answer by rapaljer(4667)

 Question 121053: 7.Graph the equations. (a) y=1/3x (b) y=3x (c) y=-1/3x (d) y=x+3 Click here to see answer by rapaljer(4667)

 Question 121057: AN AIRPLANE COVERED 24 MILES OF ITS ROUTE WHILE DECREASING ITS ALTITUDE BY 36,000 FEET. FIND THE SLOPE OF THE AIRPLANE'S LINE OF DESCENT. ROUND TO THE NEAREST HUNDREDTH. 1 MI = 5280 FT Click here to see answer by MathLover1(6622)

 Question 121050: Determine which two equations represent perpendicular lines. (a)y=3/8x-4 (b) y=4x-3/8 (c) y=-1/4x+3/8 (d) y=1/4x-3/8 Click here to see answer by mpowell31(2)

 Question 121099: I need help with this problem. Find an equation of the line containing the given pair of points. Express your answer in the form x=a, y=b, or y=mx+b (0,0) and (4,7) what is an equation of the line? y=__________ Thank you in advance for your help Click here to see answer by stanbon(57246)

 Question 121096: Find the equations of the lines that pass through the point (2,8) and are parallel to and perpendicular to the line with equation y+7x=6 Click here to see answer by checkley71(8403)

 Question 121199: are these parallel, perpendicular or both? 3y+x=6 and 2y-6x=12 Click here to see answer by stanbon(57246)

 Question 121210: This is the problem 4y-8=2y+14. Here's what i did to try to solve. 4y-8=2y+14 4y+2y=8-14 6y=6 Click here to see answer by jim_thompson5910(28504)