# Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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 Algebra: Graphs, graphing equations and inequalities Solvers Lessons Answers archive Quiz In Depth

 Question 67122: graph the equation 4x+y>_4 (4x+y is greater than or equal to 4) Click here to see answer by ankor@dixie-net.com(15624)

 Question 67206: When you are plotting a point does the x or y come first? Click here to see answer by bam878s(77)
 Question 67206: When you are plotting a point does the x or y come first? Click here to see answer by funmath(2925)

 Question 67193: I don't get it at all, I don't understand how they work...Can you help me understand them better?? Click here to see answer by ptaylor(2048)

 Question 67324: how do i find an equation relating the two variables Click here to see answer by stanbon(57219)

 Question 67313: Business and finance. The cost of producing a number of items x is given by C = mx+b, in which b is the fixed cost and m is the variable cost (the cost of producing one more item). (a) If the fixed cost is \$40 and the variable cost is \$10, write the cost equation. (b) Graph the cost equation. I know A and B I need help with c and d c) The revenue generated from the sale of x items is given by R=50x. Graph the revenue equation on the same set of axes as the cost equation. (d) How many items must be produced for the revenue to equal the cost (the break-even point)? Click here to see answer by stanbon(57219)

 Question 67308: Complete the square as an aid to graphing y = -x^2 + 8x - 12 Click here to see answer by venugopalramana(3286)

 Question 66316: A ratio of two like quantites with different units can be used as a conversion factor. Use the fact that 1 mile=1.6 kilometers to convert the following quantites. A) 50miles to kilometers. 50*1.06=53kilometers? B) 90km/hr to mi/hr. 90km divided by 1.6= 56.25mi/hr? C) How many m/s is 90km/hr. 56.25 divided by 60mins=.9375? .9375 divided by 60sec= .015625? Click here to see answer by 303795(595)

 Question 67343: Hi, can someone please help me solve the following by graphing? Thanks in advance! 1. 3x - 5y = -9 5x - 6y = -8 2. 4x + 5y = -2 4y - x = 11 Click here to see answer by Edwin McCravy(8879)

 Question 67464: heres our problem (1,y),(2,4),m=1 the directions say find the value of y so that the line passing throuhg the two points has the given slope Click here to see answer by ankor@dixie-net.com(15624)

 Question 67512: Determine which two equations represent parallel lines.(a) y = x + 4 (b) y = x – 7 (c) y = 2x + 8 (d) y = 2x – 4 Click here to see answer by bam878s(77)

 Question 67796: Solve by graphing. x + y = 3 x - y = 1 I did: x + y = 3 y = -x + 3 m = -1, 6 = 3 x - y = 1 -y = -x + 1 m = -1, 6 = 1 on my graph they coincided with each other instead of intersecting which is how the answer reads. (2,1) Where did I go wrong? Thanks a lot. Kyle Click here to see answer by checkley71(8403)

 Question 67823: what is y=mx+b if y=7, x=6, and m=undefined Click here to see answer by stanbon(57219)

 Question 67926: You have at least \$30 in change in your drawer, consisting of dimes and quarters. Write an inequality that shows the different number of coins in your drawer. Click here to see answer by stanbon(57219)

 Question 67928: Can you tell me how to solve X^2+9X+20=0 by factoring Click here to see answer by checkley71(8403)

 Question 67950: How would you graph this function? f(x) = -2x - 5 Click here to see answer by stanbon(57219)

 Question 68049: Ok, i need to graph each equation by using the slope and y-intercept. Here is my problem: 5y+3=-5 Click here to see answer by stanbon(57219)

 Question 68126: Solve by graphing the system. 2x + 4y = 2 x + 2y = 1 These problems I seem to have a hard time understanding. I am needing some help with this. Thanks Click here to see answer by josmiceli(9649)

 Question 68127: Solve by graphing the the system. 4x + 2y = 10 y = 4 Any help with this would be helpful, I am having a hard time with these problems. Thanks Click here to see answer by stanbon(57219)

 Question 68084: Graph the inequality 3x + y less than or equal to 5 I am confussed and not sure how to graph this equation. Thanks Click here to see answer by stanbon(57219)

 Question 68189: Graph the inequality 4x + y is greater than or equal to 4 Click here to see answer by funmath(2925)

 Question 68148: If one-half of the complement of an angle plus three-fourths of the supplement of the angel equals 110 degrees, find the measure of the angel. Click here to see answer by checkley71(8403)

 Question 68117: Graph the solution set of x < 7. Click here to see answer by funmath(2925)

 Question 68236: I don't know how to graph two equations to find the breaking point. C=25+x*0.24 and C=31+x*0.19 I have to graph these points to find the breaking point and I am stuck..How do I do this? Thanks Brandi Click here to see answer by checkley71(8403)

 Question 68022: Given a line containing the points (1,4), (2,7), and (3,10) determine the slope-intercept form of the equation, provide one additional point on this line, and graph the function. Click here to see answer by checkley71(8403)

 Question 68290: I could really use some help. Thanks! Angela Find the slope of the line passing through the points (–8, –3) and (–2, 2). Click here to see answer by checkley71(8403)

 Question 68291: Which of the ordered pairs (3, 1), (0, –4), (–4, 0), (–3, –7) are solutions for the equation x – y = 4? Thanks! Click here to see answer by checkley71(8403)

 Question 68295: Find the slope of the line passing through the points (–9, –4) and (0, –4). Thanks! Click here to see answer by checkley71(8403)

 Question 68294: Use the following tabe to answer the question. Population of Europe by Age GroupsPopulation (in thousands)195019701995Age 0-14143,175166,367139,464Age 15-64359,162421,432487,110Age 65+44,98168,642101,338Age 75+14,55322,76238,139Total547,318656,441727,912Source: European Rural Development (ERD) Project.Between 1950 and 1995, did the European population for age 15-64 or for age 75+ increase by a greater percentage? Click here to see answer by stanbon(57219)

 Question 68293: Find the slope of the line passing through the points (4, 0) and (4, 5). Thanks! Click here to see answer by stanbon(57219)

 Question 68323: Which of the ordered pairs is a solution for the equation 3x – 2y = 6? A) (0, –3) B) (0, 3) C) (–2, 0) D) (–2, –3) Click here to see answer by rmromero(383)

 Question 68328: An employee who produces x units per hour earns an hourly wage of y = 0.55x + 7 (in dollars). Find the hourly wage for an employee who produces 13 units per hour. Thank you Click here to see answer by stanbon(57219)