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

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Algebra: Graphs, graphing equations and inequalities

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Question 241225: when doing systems of equations and graphing, i have a problem that reads
4x - 20 = 5y
8x - 10y = 12
i know how to graph the first equation but how do i graph the second equation? i was told by my instructor to solve using the intercept points by substuting the exponent with zero (4 * 0) - 20 = 5y and solve then sub zero for the other exponent and then graph the line but with the second equation the numbers come out in fraction form and i can not figure out how to graph the intercepts. any and all help would be appreciated...
thanks...
Click here to see answer by stanbon(26259)

Question 240354: How do i graph y=5x-2 and y=x+4?
Click here to see answer by Alan3354(6060)

Question 241140: is each ordered pair a solution of the inequality
5x-3y>15;(-4,-3)(2,2)
Click here to see answer by unlockmath(108)

Question 241003: how do you graph a fraction on a 4 quadrant graph?
Click here to see answer by nyc_function(260)

Question 241037: Use the rule y = -x + 7 to fill in the blank.
If (-1, y) is on the graph, then y =
Click here to see answer by rapaljer(3620)

Question 241031: Use the rule y = -x + 7 to fill in the blank.
If (1, y) is on the graph, then y =
Click here to see answer by rapaljer(3620)

Question 240967: How do you solve (x^2-2 + x) upper half...over...(12 + 6) lower half? idk how to do the fractions

Click here to see answer by checkley77(7035)

Question 240811: I'm having problems with writing an equation of a line that is perpendicular because our text book doesn't do a good job explaining it.
"write the equation of a line that is perpendicular to the given line and that passes through the given point." -4x-8y=24; (4,-1) the opions they give you are
1.) y=2x-9
2.) y=1/2x+6
3.) y=1/2x-9
4.) y=-2x-9
I found the negative reciprocal of 4 which is -1/4 and that's as far as I have gotten. After 13 hours of doing this homework I honestly can't understand what I'm reading.
Click here to see answer by Alan3354(6060)

Question 240449: solve using reduced fractions not decimals
3/4=-2/5x+1/2
Click here to see answer by ankor@dixie-net.com(6693)

Question 240813: transform to slope intercept form: 2x+5y=15
Click here to see answer by Edwin McCravy(2920)

Question 240786: Find the slope and y intercept of each equation. Then graph.
y=x+2
y=4/5x+2
y=7/4x+2
Click here to see answer by rapaljer(3620)

Question 240731: Find the soultion to the system of equations.
y = 3x - 3
y = 5x - 4
Click here to see answer by blwinbbbles(1)

Question 240728: Find the soultion to the system of equations.
5x + y = 0
-5x + y = -10
Click here to see answer by unlockmath(108)

Question 240724: Determine the solution to the system of linear equations graphically. If the system is dependent or inconsistent, so state.
y = x + 1
y = 3x + 5
Click here to see answer by Alan3354(6060)

Question 240729: Find the soultion to the system of equations.
x = -y
y + x = 6
Click here to see answer by Alan3354(6060)

Question 240715: Graph each point. (0, 4, 0)
Click here to see answer by rapaljer(3620)

Question 240725: Determine the solution to the system of linear equations graphically. If the system is dependent or inconsistent, so state.
x + y = 2
x + y = 0
Click here to see answer by Alan3354(6060)

Question 240694: 1) A wire is used to anchor a 20-foot-high pole. one end of the wire is attached to the top of the pole. The other end is fastened to a stake 5 feet away from the bottom of the pole. find the length of the wire to the nearest tenth of a foot.
2) Elizabeth Kaster is flying a kite. she let out 80 feet of string and attached the string to a stake in the ground. The kite is now directly above her brother Mike, who is 32 feet away from her. Find the height of the kite to the nearest foot.
3) Solve for P in A= P+PRT

4)Solve for b in A= 1/2h (B+b)
Click here to see answer by nyc_function(260)

Question 240617: graph equation
y = -9/5 x - 1/5
y = 7/2 x + 1/2
Click here to see answer by checkley77(7035)

Question 240632: Please, How can I solve this problem?
Find an equation for the line parallel to the line 3x-y=8 and containing the point(3,0). Express the answer using the the slope–intercept form.
Click here to see answer by checkley77(7035)

Question 240447: simplify some facoring required
4x/x+3/12/18x+54
Click here to see answer by College Student(208)

Question 240458: solve use reduced fractions not decimals
x-2/2+1/3=x/6
Click here to see answer by checkley77(7035)

Question 239408: y=3-2y x=0 x=1
Click here to see answer by Alan3354(6060)

Question 240451: solve using reduced fractions not decimals
2/3x-5/6=1/2
Click here to see answer by Alan3354(6060)

Question 240153: How do you find the slope and y-intercept of the line 6x-2y=8
Click here to see answer by ankor@dixie-net.com(6693)

Question 240135: How do you solve the problem: 3x-2y=2
y=2x+8 ?
Click here to see answer by vleith(1977)

Question 240088: Graph the equation. I dentify the y intercept.
y=-2x-3

Click here to see answer by rfer(2688)

Question 239812: The graph of 2x - 3y = 12 has:

Click here to see answer by checkley77(7035)

Question 239637: Graph the following equation on a rectangular coordinate system: 3x+y-3=0
Click here to see answer by Alan3354(6060)

Question 239592: How do you graph and on the same graph and shade?
Click here to see answer by Edwin McCravy(2920)

Question 239610: graph equation y=1-x Plot at least 5 point for equation
Click here to see answer by solver91311(5072)

Question 239607: what is x and y-intercept for each problem
x+3y=9

and 2x+3y=6

and 4x-5y=10

and x +y =5
Click here to see answer by rfer(2688)

Question 239594: How do you graph y<2x^2+6x+1 and y is less than or equal to -2x^2-3x-1 on the same graph and shade?
Click here to see answer by Alan3354(6060)

Question 239360: 6x+3y=9 x=0 y=? x=2 y=?
Click here to see answer by nyc_function(260)

Question 239380: 2x+5y=2, -3x-y=-3

Click here to see answer by nyc_function(260)

Question 239341: how do you graph y=x
Click here to see answer by Theo(674)

Question 239253: use a transformation of the graph of y = x^5 to grap the function: f(x)= (x-7)^5+5
Click here to see answer by Photonjohn(42)

Question 239168: if i were to need to find the point that three lines share is it possible for there to be no solution?
the problem is
6x+2y+4z=2
3x+4y-8z=-3
-3x-6y+2z=5

Thank you
Click here to see answer by stanbon(26259)

Question 239053: please help me solve this equation.
2(3+3g)>2g+14
Click here to see answer by Theo(674)

Question 239031: write the equation of the line, with the given properties, in slope-intercept form
slope = -2 through (-7, 5)
Click here to see answer by College Student(208)

Question 239026: find the slope of the line through the given points.
(2, 8) and (3, 5)
Click here to see answer by Alan3354(6060)

Question 239027: find the slope of the line through the given points.
(-8, 6) and (-8, -7)
Click here to see answer by Alan3354(6060)

Question 238320: i need help on "solvig systems by substituation

Click here to see answer by College Student(208)

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