# 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 80640: Write the equation of the line with slope 5 and y intercept (0,-3) Click here to see answer by rapaljer(4667)

 Question 80689: I've been trying to figure a few of these equations all day, but I can't seem to understand the how to find the slopes and graphs and I'm getting more homework than I can keep up with. Also is there a more simple explanation of how to find whether points are parallel or perpendicular? Is there a way I can get some one on one tutoring, either from here or another program? -find the slope of any line perpendicular to the line through points (0,5) and (-3,-4) -Floor plans for a building have the four corners of a room at the points (2,3),(11,6),(-3,18) and (8,21). Determine whether the side through the points(2,3) and (11,6) is perpendicular to the sides through the points (2,3) and (-3,18). Click here to see answer by jim_thompson5910(28699)

 Question 80639: Find the slope of the line passing through points (11,20) and (8,2) Click here to see answer by jim_thompson5910(28699)

 Question 80719: How do I find the slope of the line passing through the points (-9,-1) and(-2,-1)? My answer is 7, am I right? Click here to see answer by Earlsdon(6294)

 Question 80716: How do I write the equation of the line passing through (3,10) and (3,-3) Click here to see answer by Earlsdon(6294)

 Question 80715: How do I find out if the following lines are perpendicular, parallel or neither? L1 through (-4,-7) and(1,3) L2 through (2,6) and (4,10) Click here to see answer by Earlsdon(6294)
 Question 80715: How do I find out if the following lines are perpendicular, parallel or neither? L1 through (-4,-7) and(1,3) L2 through (2,6) and (4,10) Click here to see answer by josmiceli(9817)

 Question 80781: Solve the system by graphing. x + y = 3 x + y = -1 Click here to see answer by checkley75(3666)

 Question 80637: Find the slope of the line passing through the points (-9,-1) and (-2,-1) Click here to see answer by checkley75(3666)

 Question 80779: Solve the system by graphing. x – 2y = 8 x + y = -1 Click here to see answer by daniellagirl89(3)

 Question 80790: graph the inequality. 4x + y >= 4 (I couldn't make the proper greater sign with a line underneath it symbol). Click here to see answer by bucky(2189)

 Question 80826: I need help on how to graph a liner equation and how to determine it's slope. y=3/4x-4. Thanks!! Click here to see answer by stanbon(57953)

 Question 80854: Here is the question as stated (this is not from a textbook, and I can't find an explanation for a problem like it in any textbooks I have): "Write an equation in standard form for the line parallel to x - 2y + 7 = 0 and contains the point (-4,0)." I am just unsure how to solve this problem. I have converted problems from slope intercept form to standard, and standard to slope intercept, but there hasn't been an extra component (like the +7 in this one.) I am also not sure how to do this when I only have one set of coordinates. I tried figuring out the value of x and the value of y by (if x=0 then y=?, and if y = 0 then x=?) but I have two problems. One is, the numbers I get (x= -7 and y= -7/2) don't make the problem true. And even if they did, I don't know how to use them to help me make the original equation a line parallel to another point. Help! Click here to see answer by stanbon(57953)

 Question 80938: The problem I have--not from a text book--is this: "Draw the graph of the linear function n(x) = 0" On this one, I am totally lost. Other than understanding there is a "0" point on the y axis, I don't know what I am supposed to do. Help! Click here to see answer by bucky(2189)

 Question 81080: Use elimination to solve each system of equations. Find the two numbers whose sum is 51 and whose difference is 13. Click here to see answer by Mathwiz101(4)

 Question 81134: If Greg buys gas at \$2.99 per gallon. And uses 60 gallons of gas per week, how much would he pay for gas per year? How would write this in equation form? Then how would I graph the equation for this? PLEASE HELP? Click here to see answer by checkley75(3666)

 Question 81102: Write the equation of the line with slope -1/2 and y-intercept (0, 3). Click here to see answer by checkley75(3666)

 Question 81077: Use elimination to solve each system of equations. 13a+5b=-11 13a+11b=7 Click here to see answer by stanbon(57953)

 Question 81142: L has intercept (0,2) and is perpendicular to the line with the equation 2x-3y=6 This equation has to be written with the equation of the line L satisfying the given geometric condition. This equation makes absolutly no sense. - In planning for a new item, a manufacturer assumes that the number of items produced is x and the cost in dollars C of producing these items are related by a linear equation. Projections are that 100 items will cost \$10,000 to produce and that 300 items will cost \$22,000 to produce. Find the equation that relates C and x. Thank you if you can help!!! Click here to see answer by stanbon(57953)

 Question 81146: The boundary line of y>3 is graphed, how do I determine the correct half-plane and complete the graph? Click here to see answer by scott8148(6628)

 Question 81293: a radio beacon is located at (-1, 0), and another at (2, -1). A navigator's equipment tells her that the line joining her position to the first beacon has slope -5 and the line joining her positon to the second beacon has slope 3. What is the navigator's approximate location? Click here to see answer by stanbon(57953)

 Question 81298: I have to graph this and I am not sure how? Graph the solution set of x < –5. Click here to see answer by stanbon(57953)

 Question 81246: Can you transform the inequality into an equivalent inequality with y on one side and then graph it. 2x+y>-4 Click here to see answer by ankor@dixie-net.com(15746)

 Question 81251: use thw slope intercept to graph the equation y=(3/5)x-2 Click here to see answer by checkley75(3666)

 Question 81465: I'd really appreciate some help with my algebra, my middle school teacher just confuses me:( Here's the equation: find the line that passes through (-5,10), (0,5), and (5,-20), find the following: what is the slope of this line? what is the y intercept of this line? what is the equation of this line? find x when y = 24 Click here to see answer by stanbon(57953)

 Question 81463: I'd really appreciate some help with my algebra, my middle school teacher just confuses me:( Here's the equation: find the y intercept and x intercept if y=2x-5 Click here to see answer by scott8148(6628)

 Question 81440: the sophomore class at south high school raised \$800 from the sale of tickets to a dance. tickets sold for \$1.50 in advance, and \$2.00 at the door. if a total of \$475 tickets were sold, the number of tickets sold at the door was Click here to see answer by stanbon(57953)

 Question 81492: I need help...I need to determaine whether the pair lines is parallel, perpendicular, or neither. 2x-5y=-3, 2x+5y=4 Thanks!! Click here to see answer by stanbon(57953)

 Question 81522: Match the equation with a graph. I do not know this at all A y=-2/3x+1, B y=-3/2x+1 C y=2x-1 D y=1/2x-1. What would a graph look like that matched one of these equations. Click here to see answer by mathdoc316(9)

 Question 81520: How do you graph x^2-12x+36=0 to estimate the solutions of the equations? Click here to see answer by dolly(163)

 Question 81554: identify the axis of symmetry, create a suitable table of values, and sketch the graph (including the axis of symmetry). y= x^2 - 5x + 3 thank you. Click here to see answer by tutorcecilia(2152)

 Question 81595: help please if you could show me what formula to use it would be easier for me to understand how to read story problems Thank You. The directions are to write a system of inequalities representing this situation, where x is the number of scarves and y is the number of sweaters. Then graph the system of inequalities: A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce, and the sweaters take 14 hours. The labor available is limited to 40 hours per week, and the total production capacity is 5 times per week. Click here to see answer by ankor@dixie-net.com(15746)

 Question 81626: help solve, having hard time and can you please explain: Two angles are complementary if their sum is 90°. If the measure of the first angle is x°, and the measure of the second angle is (2x - 3)°, find the measure of each angle. Click here to see answer by chitra(359)

 Question 81636: Convert 43/6 to a mived number. This one I'm a bit confused, b2 – 2bc + c2 if b = 3 and c = –2. with the 2bc, do I multiply the three numbers together, or do I do each one seperate. combine like terms. 5w + 5x – 9w- how do i figure out what goes where. I'm trying to understand if the w and x represent something or I'm supposed to complete the equation as if they werent there. Use the indicated property to write an expression that is equivalent to the following expression. (7 + 11) + 2 (associative property of addition) Click here to see answer by ankor@dixie-net.com(15746)

 Question 81664: I can't seem to fully understand how to get through the whole process to the answer. in the book the problem states as follows: 5y-3x=15 let y=0 5y-3x =15 5(0)-3x =15 -3x =15 x =15 let x=0 5y-3x =15 5y-3(0)=15 5y =15 y =3 let y=6 5(6)-3x =15 30-3x =15 -3x = - 15 - 15 x = -15/-3 or 5 okay, this is the example in the book. I don’t understand where the uses of the 6 as y comes in. Please help. thank you. Click here to see answer by rapaljer(4667)

 Question 81663: I can't seem to fully understand how to get through the whole process to the answer. in the book the problem states as follows: 5y-3x=15 let y=0 5y-3x =15 5(0)-3x =15 -3x =15 x =15 let x=0 5y-3x =15 5y-3(0)=15 5y =15 y =3 let y=6 5(6)-3x =15 30-3x =15 -3x = - 15 - 15 x = -15/-3 or 5 okay, this is the example in the book. I don’t understand where the uses of the 6 as y comes in. Please help. thank you. Click here to see answer by Edwin McCravy(8999)

 Question 81637: I'm learning how to write my "results" in slope-intercept form. And I'm having a little difficulty trying to get these worked out and was wondering if I could get some assistance. (0,5),m= -3/5 (-1,3) and (4,-2) (2,-3) and (2,4) I could really use the step by step process of how to do this, if possible. Thank you. Click here to see answer by Edwin McCravy(8999)

 Question 81685: How do I find three ordered pairs for this equation ? y=2x+2 Click here to see answer by rapaljer(4667)

 Question 81684: How do I find three ordered pairs for this equation ? y = 2x+2 Click here to see answer by rapaljer(4667)

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