# Questions on Algebra: Coordinate systems, graph plotting, etc answered by real tutors!

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 Algebra: Coordinate systems, graph plotting, etc Solvers Lessons Answers archive Quiz In Depth

 Question 76905: Help! I'm stuck. The question is: In the xy-coordinate plane, the graph of x = y squared - 4 intersects line "l" at (0,p) and (5,t). What is the greatest possible value of the slope of "l"? When I plugged in the p and t coordinates to get the full coordinates, I got a slope of 1/5, so I thought maybe -5 would be the slope of an intersecting line. Can someone help? Thanks. Click here to see answer by scott8148(6628)

 Question 77484: graph the equation by plotting three points and connecting them. 3x-2y=0..................what do i put in place of the x and y? Click here to see answer by checkley75(3666)

 Question 77764: What is the equation of a line going through points (0,5) (6,2)? Please and thank you. Click here to see answer by jim_thompson5910(28717)

 Question 77856: okay i have to find the standard form of a line that has slope of 3 and passes through the coordinate pair (4,2) Click here to see answer by chitra(359)

 Question 78319: Find an equation of the line containing the given pair of points (-1,-8) and (-4,-7) Thanks Click here to see answer by rmromero(383)

 Question 78694: How do you find percent of increase or decrease? Click here to see answer by stanbon(57984)

 Question 78847: What is the slope of the line of best fit? use the point (1991, 230) amd (1997, 350) Click here to see answer by jim_thompson5910(28717)

 Question 79260: I have to find the coordinates of the vertex. and then sketch the graph... the problem is: y=x^2+6x+12 I'm assuming the x^2 means x sq? Click here to see answer by stanbon(57984)

 Question 79300: find the coordinates of the x and y intercepts of 3x +9y = -54 Click here to see answer by mathdoc314(58)

 Question 79417: Please explain to me how to sketch the graph of y=5+7x. How do you figure out the numbers in the table when you are constructing a table of values? Please explain step by step PLEASE. Thank you Click here to see answer by ankor@dixie-net.com(15747)

 Question 79786: I need to sketch a rectangular coordinate system and graph the line y = 1/2x - 1 Click here to see answer by rapaljer(4667)

 Question 79814: which of the folowing is equivalent to 3a+4b-(-6a-3b)? 16ab -3a+b -3a+7b 9a+b 9a+7b Click here to see answer by rapaljer(4667)

 Question 79872: Write an equation of the line passing through (5, 0) and parallel to the line y = 5x – 2. Click here to see answer by checkley75(3666)

 Question 79993: What is the slope of this line? Click here to see answer by Edwin McCravy(8999)

 Question 79999: How would you do this kind of problem? Show step by step PLEASE! I get very confused with stuff like this... Click here to see answer by ankor@dixie-net.com(15747)

 Question 80783: What are 3 points if the x-coordinate is square of the y-coordinate? Click here to see answer by ankor@dixie-net.com(15747)

 Question 80918: Trying to help my son with this problem. Which is an equation of the line with Slope 2/3 that passes through the point (4, -1). Could you please show the steps. I'm stumped on this one. Choices: f. y = -1/4x + 2/3 g. y = -4x + 2/3 h. y = 2/3x - 5/3 j. y = 2/3x - 11/3 Click here to see answer by checkley75(3666)

 Question 81185: At what points does the line 4x + 12 = 3y cross the x and y axes? Click here to see answer by tutor_paul(490)

 Question 81949: Find the x- and y-intercepts for the equation. 53) -6x - 12y = 12 Click here to see answer by bucky(2189)

 Question 81947: Find the slope of each line and determine if the lines are parallel, perpendicular, or neither. 54) The line y - 4x = -1 and the line x + 4y =12 . Click here to see answer by bucky(2189)

 Question 81944: find the slope and y intercept -2y = x - 6 Click here to see answer by bucky(2189)

 Question 82843: Change the equation to a slope-intercept form: 8x-11y=5 Click here to see answer by tutorcecilia(2152)
 Question 82843: Change the equation to a slope-intercept form: 8x-11y=5 Click here to see answer by Edwin McCravy(8999)

 Question 82844: This one really confused me - please help! Write the equation of the line that satisfies the given condition: contains the point (2,6) and is perpendicular to the line 4x-5y=7. Thank you! Click here to see answer by tutorcecilia(2152)
 Question 82844: This one really confused me - please help! Write the equation of the line that satisfies the given condition: contains the point (2,6) and is perpendicular to the line 4x-5y=7. Thank you! Click here to see answer by funmath(2925)
 Question 82844: This one really confused me - please help! Write the equation of the line that satisfies the given condition: contains the point (2,6) and is perpendicular to the line 4x-5y=7. Thank you! Click here to see answer by josmiceli(9819)

 Question 82861: write the standard form of the equation of the line described: through (-1,3), perp. to y=-1/5x + 5. This is from a worksheet that my stepson brought home from school. Click here to see answer by jim_thompson5910(28717)
 Question 82861: write the standard form of the equation of the line described: through (-1,3), perp. to y=-1/5x + 5. This is from a worksheet that my stepson brought home from school. Click here to see answer by scott8148(6628)

 Question 83465: This problem is asking for me to show coordinates, graph my work and to show it. I really don't understand any of this. Using the formula, , let r = 10%, P = 1, and n = 1 and give the coordinates (t, A) for the points where t = 0, 1, 2, 3, 4. Round your answer to the nearest tenth's place. Click here to see answer by stanbon(57984)

 Question 84288: I feel really stupid asking this basic question but I am having problems understanding how to solve an equation for Y so I can grap[h and figure slope intercept. as an example I will use 2X + 5Y - 3 = 0 If I wanted to solve the equation for Y to graph the line, how do I do this. I have been away from math for over 30 years now and am returing to college. I dont remember any of this and am having problems getting the idea. PLEASE help in any way possible. Miller Click here to see answer by checkley75(3666)

 Question 84415: find the equation of a line in standard form that has slope 2/3 and contains the point p(3,6) Click here to see answer by checkley75(3666)

 Question 84414: how do you graph y (is greater than or equal to) 3x-2 ??????? please heLLLLPPPPPPPPPPP!!!! Click here to see answer by sofiyacherni(99)

 Question 84439: How do I graph the linear equation 3x + 2y = 6 by plotting 5 points. You must choose at least one negative x value. Show the points as ordered pairs. Thanks for your help Click here to see answer by jim_thompson5910(28717)

 Question 84446: Please help...I need to write an equation in slope-intercept form using the following coordinates (-1,-7) and (-8,-2). I got as far as finding the slope m=-5/7 but I'm confused with rest of the equation. Thank you Click here to see answer by josmiceli(9819)

 Question 84538: Please answer this question: For what value of y does the point (-3,y) lie on the line y = -3x + 4? Click here to see answer by jim_thompson5910(28717)

 Question 84444: Graph the linear equation below by plotting five points. You must choose at least one negative x value. Show your five points as ordered pairs y= 1/3x - 1 Click here to see answer by wallflower(4)

 Question 84816: The question that I am having trouble with states: Find the standard form of the equation of the specified circle. Center: (-5, -4); radius: 5 squareroot 5. Click here to see answer by tanimachatterjee(60)

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