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

Tutors Answer Your Questions about Graphs (FREE)

Question 68324: Find the slope of the line passing through the points (–9, –1) and (–2, –1).
Click here to see answer by checkley71(8403)

Question 68289: Solve the following system of linear inequalities by graphing.
3x+4y<12
x+3y<6
x>0
y>0
All of the < > symbols are underlined I just don't know how to show it in the equations. Thanks.
Click here to see answer by ankor@dixie-net.com(15649)

Question 68287: Solve the system by graphing.
x-y=2
3x-3y=6
Click here to see answer by rmromero(383)

Question 68394:
Height(in):65,66,67,66,62,70,63,65,60,64,67,63,65,69,67,68,62,63,63,70,74,58,63,74
Shoe size:9.5,8.5,12,11,7,10,10,8,8,9,10.5,10,9.5,11,9,9.5,10,10,9,12.5,14,5,6.5,12

2)Identify the dependant and the independant variable.
4)How do u kno where the best fit line is?
6)Write an equation for ur line in point intercept form.
7)Rewrite the equation in standard form.
8)Estimate the shoe size for the following heights. Tell whether u would use linear or interpolation or linear extrapolation.height:66.5 - shoe size?
77 - shoe size?
80 - shoe size?
58 - shoe size?
10)Describe the pattern indicated in ur scatter plot. Do u think this pattern will continue for ever/ why or why not?
I need this information by tomarrow afternoon around about 5.00p.m Our teacher gave us a surprise project.
Click here to see answer by stanbon(57323)

Question 68309: Please help me with this I cannot seem to figure out how to graph this function.
Graph: f(x) = -2x + 2
Thanks for any help you can give.
Click here to see answer by rmromero(383)

Question 68502: Solve and graph the solution set. 3(x – 4) > 7x – 9
I am having trouble solving this problem and graphing. Could someone provide me with a little help to get back on track. Thanks.
Click here to see answer by stanbon(57323)

Question 68517: solve each equation and graph
x - 2y = 8
3x - 2y = 12

Click here to see answer by checkley71(8403)

Question 68517: solve each equation and graph
x - 2y = 8
3x - 2y = 12

Click here to see answer by rmromero(383)

Question 68532: 2x + y = 15
x + 2y = 18
Click here to see answer by rmromero(383)

Question 68558: solve each equation and graph.
3x - 6y = 9
x - 2 = 3
Click here to see answer by rmromero(383)

Question 68439: Solve the following problem: |2x-7|-5=4

Click here to see answer by rmromero(383)

Question 68510: Dont understand question 36, 40, 48 on page 142. Would love some help
Click here to see answer by funmath(2925)

Question 68573: Let y vary directly with x, with a constant of variation k = 3. Graph the equation of variation.
I remember doing this and you divide the x/y = 3 but this is as far as I got. Can someone please help me. Thanks
Click here to see answer by funmath(2925)

Question 68572: Graph using the intercept method: 2x + y = 4.
I am a bit confused on this one, any help would be greatly appreciated. Thanks
Click here to see answer by Earlsdon(6287)

Question 68580: Are the following lines parallel, perpendicular, or neither?
L1 through (–4, –7) and (1, 3)
L2 through (2, 6) and (4, 10)
a)Parallel
b)Perpendicular
c)Neither
The answer I got for this one was perpendicular. Is this correct? If not could you show me how to do this the right way. Thanks.
Click here to see answer by Earlsdon(6287)

Question 68590: solve each of the following systems by graphing...
2x -y = 4, 2x -y = 6
Click here to see answer by funmath(2925)

Question 68590: solve each of the following systems by graphing...
2x -y = 4, 2x -y = 6
Click here to see answer by balla52541(1)

Question 68602: Find the equation, in standard form, with all integer coefficients, of the line perpendicular to x-5y=4 and passing through (-3, 5).
I have done this every way that I can think of and can not come up with it being perpendicular. I can only come up with it as a parallel.
I have:
x-5y=4
x-5y-x=4-x
-5y=-x+4
-5y/(-5)=-x/(-5)+4/(-5)
y=1/5x-4/5
y-y[sub 1]=m(x-x[sub 1])
y-5=1/5(x-(-3))
y-5=1/5x+3/5
y-5+5 = 1/5x + 3/5 + 5
y = 1/5x + 28/5
Both slopes are 1/5 which makes it parallel. Am I doing something wrong here?
Thank you, Rich
Click here to see answer by rkennedy(3)

Question 68616: Find the slope of the line hrough the following pairs of points.
(-5,-3) and (-5,2)
Click here to see answer by checkley71(8403)

Question 68615: 2x - 3y = 12
Click here to see answer by checkley71(8403)

Question 68575: Write the equation of the line with slope and y-intercept (0, 3). Then graph the line.
This one is throwing me off with the y intercept, could I get some help please with this one. Thanks.
Click here to see answer by checkley71(8403)

Question 68571: Graph x + y = –2.
I am not sure or remember how to do this. Can someone help me with this. Thanks
Click here to see answer by checkley71(8403)

Question 68582: Please help
Complete the square as an aid to graphing :
y = -x^2 + 2x + 2
Click here to see answer by ankor@dixie-net.com(15649)

Question 68617: Find the constant of variatio k.
m varies directly with n; m = 144 when n = 8.
Click here to see answer by ankor@dixie-net.com(15649)

Question 68709: Graph the following equation.
y = 3/4x + 2
Click here to see answer by stanbon(57323)

Question 68708: Find the slope of the line through the following pairs of points.

(-5, -3) and (-5,2)

Click here to see answer by stanbon(57323)

Question 68710: Graph the following equations, using the intercept method.
2x + 3y = 6
Click here to see answer by rmromero(383)

Question 68722: What is the equation of line through (8,6) and (2,-4), My answer is -4x+2y=-16, but I'm not sure thats for any help.
Click here to see answer by rmromero(383)

Question 68614: 2x + 3y = 6
Click here to see answer by tutorcecilia(2152)

Question 68733: 1: Plot the graph of the equation 2x-3y=6 and 2x+y=-10 and intercept the result.
2: Plot the graph of the equations 2x+4y=10 and 3x+6y=12 and intercept the result.
3: Determine graphically the vertices of the triangle, the equation of whose sides are given y=x; y=0; 2x+3y=10, interpret the result?
Click here to see answer by rmromero(383)

Question 68738: Complete the ordered pair so that each is a solution for the given equation.
3x + 4y = 12 (0, ), ( ,3/4), (,0), (8/3, )
Click here to see answer by rmromero(383)

Question 68743: Graph the inequality.
2x + 3y > 6
I have been having the hardest time with this problem and cannot seem to figure it out. I need some help, Thanks.
Click here to see answer by stanbon(57323)

Question 68748: The revenue for a sandwich shop is directly proportional to its advertising budget. When the owner spent $2000. If the revenue is now $180,000, how much is the owner spending on advertising?
Click here to see answer by stanbon(57323)

Question 68746: Solve the system by graphing.
3x + y = –1
9x + 3y = –3
Please help me graph and solve this graphing system, I am not understanding how to solve these problems. Thanks
Click here to see answer by Earlsdon(6287)

Question 68744: Write the equation of the line with slope -1/2 and y-intercept (0, 3). Then graph the line.
I need help with this graphing equation. Thanks
Click here to see answer by Earlsdon(6287)

Question 68739: Celsius temperature readings can be converted to Fahrenheit readings using the formula F = 9/5C + 32. What is the Fahrenheit temperature that corresponds to each of the following Celsius temperatures: -10,0,15,100?
Click here to see answer by Earlsdon(6287)

Question 68742: Plot points with coordinates (2,3), (3/4), and (4,5) on the given graph. What do you observe? Can you give the coordinates of another point with the same property?
Click here to see answer by venugopalramana(3286)

Question 68794: how do you graph y < x - 4
Click here to see answer by jim_thompson5910(28593)

Question 68758: What is the slope of a line that is parallel to the following linear equations?

y-3=0
Click here to see answer by shaykat_2010(1)

Question 68760: What is the slope of a line that is parallel to the following linear equations??

6y+2x=9
Click here to see answer by ankor@dixie-net.com(15649)

Question 69003: 6x^-2y^2
36xy^-3
write in simplest form
Click here to see answer by stanbon(57323)

Question 69030: Write the equation of the line with given slope and y-intercept. Then graph each line using the slope and y-intercept.
Slope: -3/4; y-intercept: (0,8)
Click here to see answer by tutorcecilia(2152)

Question 69025: Find the slope and y-intercept of the line represented by the following equation.
2x - 3y = 6
Click here to see answer by ptaylor(2048)

Question 69071: A line passes through (-2,3), (2,5), and (6,k). Find k.
Click here to see answer by jim_thompson5910(28593)

Question 69019: What is the inequality of
Click here to see answer by jim_thompson5910(28593)

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