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

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Question 161766: 4x+5y=22
Click here to see answer by checkley77(12844)

Question 161790: Graph the inequality on a plane.
5x+6y ≤ 30
Click here to see answer by elima(1433)

Question 161922: Find the slope of any line perpendicular to the line through points (3,11) and (10,4).
I keep coming up with undefined......Correct??
Click here to see answer by scott8148(6628)

Question 161918: Write the equation of the line passing through (-4,-2) and (-2,-6)
This is what I did - m = -2/-4 (-2 over -4) - -6/-2 (-6 over -2) gives me -2/1 (-2 over 1) simplified it's -2. So m = -2
Then I used y = mx + b and plugged in the info as follows:
-4 = -2(-4) + b
-4 = 8 + b
-8 -8
----------
4 = b
So that would give me the answer of y = -2x + 4.
Is this correct??
Click here to see answer by scott8148(6628)

Question 161906: Write the equation of the line that passes through point (0,-4) with a slope of 6.
Here is what I did:
y-y1=m(x-x1)
y+4=6(x-0)
y+4=6x+0
-4 -4
---------
y =6x-4
Correct??
Click here to see answer by Alan3354(69443)

Question 161909: can somebody help me solve this problem. i need to find the equation of the line with these characteristics. I need to express my answer using either the general form or the slope-intercept form of the equation of the line.

x-intercept=2; containing the point (4,-5)
i forgot how to find the slope with only the, x-intercept = 2 given.

Click here to see answer by scott8148(6628)

Question 161944: Find the slope and y-intercept of -9x + 6y = 54
Here is what I did:
-9x + 6y = 54
+9x +9x
--------------
6y = 9x + 54
6y/6 (6y over 6) = 9x/6 (9x over 6) + 54/6 (54 over 6)
y = 9/6 (9 over 6) + 9
Simplified : y = 3/2x (3 over 2) + 9
So the answer I came up with is 9 is the slope, and the y-intercept is 3/2 (3 over 2).
Correct??
Click here to see answer by Alan3354(69443)

Question 161962: please help: -7x+3y<-18 Graph linear inequality. (please show steps)
Click here to see answer by jim_thompson5910(35256)

Question 161960: please help: 6x-4y<-12 Graph the linear inequality
Click here to see answer by jim_thompson5910(35256)

Question 162173: CAN SOMEONE HELP ME WITH THIS PROBLEM;
Solve the inequality and graph the solution.
p^2 + 9p + 14 > 0
Click here to see answer by nini2010(2)

Question 162141: graph the inequality on a plane.
x+y<5
Click here to see answer by elima(1433)

Question 162288: Are the following lines parallel, perpendicular, or neither?
L1 through (�4, �7) and (1, 3)
L2 through (2, 6) and (4, 10)

Click here to see answer by Alan3354(69443)

Question 162287: Graph the inequality. y > �5

Click here to see answer by AnneElliot(1)

Question 162373: i dont know if w=1/2 is a solution or not?
please help me figure out the answer =]
Click here to see answer by Alan3354(69443)

Question 162483: determine the slope of the line through these points.
(-3,2)(5,-4)
Click here to see answer by checkley77(12844)

Question 162482: determine the slope and coordinates of the y-intercept. no need to graph
-4x-3y=-6
Click here to see answer by checkley77(12844)

Question 162487: determine whether [- 4over3,6] is a solution for y=- 3over4x+5
Click here to see answer by checkley77(12844)

Question 162495: GRAPH, SHOWING X AND Y INTERCEPTS AND AT LEAST ONE MORE POINT
-2x=-3y-6
Click here to see answer by checkley77(12844)

Question 162511: please show me how to graph the following equation!
1) y=2x-3
2) 6x+8=4x-2y
3) y=|x|+2
4) 3x+4=x-6

These are examples of what I am having trouble with. If you can help me out I would apprieate it.
Click here to see answer by vleith(2983)

Question 162529: Tell whether each function is quadratic.Explain
x=-4,-3,-2,-1,0
y=39,18,3,-6,-9
Click here to see answer by vleith(2983)

Question 162485: write the equation of the line in slope-intercept form
passing through the points (-1,5)(-3,-2)
Click here to see answer by checkley77(12844)

Question 162494: GRAPH, SHOWING X AND Y INTERCEPTS AND AT LEAST ONE MORE POINT
1 OVER 2 X- 2 OVER 3 Y=1
Click here to see answer by checkley77(12844)

Question 162486: write thev equation of a line in the form Ax+By=C throgh the point (-5,-3)and perpendicular to the line y= - 2over3x+6
Click here to see answer by ankor@dixie-net.com(22740)

Question 162496: GRAPH THIS INEQUALITY
y< 3OVER2x-4
Click here to see answer by elima(1433)

Question 162524:
Click here to see answer by elima(1433)

Question 162717: Graph the equation and identify the y-intercept y=5x-9
Click here to see answer by checkley77(12844)

Question 162727: Please help. Tough for me.
Determine whether the ordered pair is a solution of the inequality.
(-5,3) ; 4x +y < -8
In this case, are the ordered pair a solution?

Click here to see answer by nerdybill(7384)

Question 162723: Please help. I am so lost.
A cellular phone company offers a contract for which the cost C, in dollars, of t minutes of telephoning is given by C=0.25(t-500)+ 56.95, where it is assumed that t is greater than or equal to 500 minutes. What times will keep cost between $94.95 and $144.45?
For the cost to be between $94.95 and $144.45, the telephoning time must be between ______ minutes and _________minutes.

Click here to see answer by nerdybill(7384)

Question 162728: Please help. Seems like it should be easy, just not for me.
Determine whether the given solutions of the inequality.
4, -19, -13, -2
y-9 > 2y-3
Is 4 a solution?__________
Is -19 a solution?_________
Is -13 a solution?_________
Is -2 a solution?__________

Click here to see answer by Earlsdon(6294)

Question 162745: 8x-(5x+7)=8 Solve this equation
Click here to see answer by checkley77(12844)

Question 162741: are these line parallel perpendicular or neither?
5x+3y=3
3x-5y=9
Click here to see answer by checkley77(12844)

Question 162725: Please help.

Solve by the elimination method.
3x + 4y=3
6x + 8y=6
What is the solution of the system?
(Type an ordered pair. Type an integer or a fraction. Type N if there is no solution. Type I if there are infinitely more solutions.)

Click here to see answer by checkley77(12844)

Question 162777: solve the following system of equations?
x+2y=3
x=5-2y
what is the order pair?
Click here to see answer by user_dude2008(1862)

Question 162747: solve
0.3x+7 is less than or equal to 0.7x-4
Click here to see answer by edjones(8007)

Question 162749: solve the following system of equations
x+2y=3
x=5-2y
what is the order pair??

Click here to see answer by checkley77(12844)

Question 162846: can someone help me with this
Solve the inequality and graph the solution.
p^2 + 9p + 14 > 0
a. (-7,-2)
b. (- infinity, -7)
c. (-2, infinity)
d. (- infinity, -7) or (-2, infinity)

Click here to see answer by joecbaseball(37)

Question 162281: graph the inequality on a plane.
x+y<5
Click here to see answer by orca(409)

Question 162828: Please help! I am struggling with these type problems.
Solve then graph.
a + 4 < -12
The solution set is {a/a< _____}
Show the graph.

Click here to see answer by checkley77(12844)

Question 162942: How do you graph y=1/4x? I really appreciate this. Thanks Mary
Click here to see answer by checkley77(12844)

Question 163047: solve by substitution:
2x=2y=2
3x-y=1
Click here to see answer by jim_thompson5910(35256)

Question 163048: solve by elimination:
3x+5y=4
5x+2y=9
Click here to see answer by jim_thompson5910(35256)

Question 163060: WRITE THE EQUATION OF THE LINE IN SLOPE-INTERCEPT FORM.
PASSING THROUGH THE POINTS (-1,5),(-3,-2)
Click here to see answer by joecbaseball(37)

Question 163053: can someone please help me with this:
Solve the inequality and graph the solution.
5/(x-7)<6
Click here to see answer by edjones(8007)

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