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

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Question 459924: Write the equation of the line passing through the points(-1,6) and (2,0)
Click here to see answer by stanbon(75887)

Question 459939: y-(-7)=2/5(x-9)
I need to write this in the form of y=mx+b; simplified. I know the answer; I just can't figure out the steps. Help please?

Click here to see answer by rfer(16322)

Question 459937: Solve the system of equations
8x + 4y = 8
-12x + 3y = 12
a) symbolically
b) graphically
c) numerically
Can someone assist me with this. I need to see how the solution was arrived at.
Thank you in advance for your assistance.
Devoted,
Minka.
Click here to see answer by ankor@dixie-net.com(22740)

Question 459932: I'm 46 years old and am trying to refresh my algebra.
How would I graph the function y=f(x)=x^2

Click here to see answer by rfer(16322)

Question 459959: Hi, could you tell me how to find the coordinates of points on the graph in (x, y) form?
Click here to see answer by rfer(16322)

Question 459931: I'm 46 and trying to refresh my algebra.
How would you graph the equation x-y=6.

Click here to see answer by rfer(16322)

Question 460039: I really dont understand this problem:
Click here to see answer by oberobic(2304)

Question 460038: I am starting to remoldle my yard and I want to spend no less than $6000 and no more tha $10000. Write an inqualities for this
Click here to see answer by rfer(16322)

Question 460034: i need help with the following:
Solve the inequality 2(3 - x) > 4 - 5x
Thank You
Click here to see answer by rfer(16322)

Question 460070: solve each system by graphing both lines and identify where they intersect:
y = -3x + 4
6y + 18x = 24
question 2
y = x + 3
x - 7 = 0
Click here to see answer by mananth(16946)

Question 460035: i need help with this problem: Solve the inequality | 1/2 x + 1 | < 1/3
I think i should sqrt both sides to cancel out the brackets but i'm not too sure.
Click here to see answer by Alan3354(69443)

Question 460271: a line in the Cartesian plane passes through the points (-2, 4) and (2, -1) what are the rise and run of the lines
Click here to see answer by MathLover1(20849)

Question 460254: find the x intercept 2x+y=7
Click here to see answer by rfer(16322)

Question 460308: Which of the following do you find easier to graph? Why?
a. 3x + 4y = 8
b. y = (-3/4)x + 2

Also I have one more question
Why is the graph of x = 7 is a vertical line?
Click here to see answer by MathOclock(6)

Question 460383: Graph the line containing the given pair of points and find the slope. (3,2), (-6,-5)
Click here to see answer by rfer(16322)

Question 460513: 2x+y=2, 2x+y=8
Click here to see answer by Alan3354(69443)

Question 460614: Solve. Then graph.
a + 6 ≤ - 18
Click here to see answer by MathLover1(20849)

Question 460612: Graph and write the solution in interval notation:
x < 7 and x ≥ - 4
Click here to see answer by MathLover1(20849)

Question 460623: Solve the system of equations by graphing. Then classify the system as consistent or inconsistent and as dependent or independent.
8x-7y=42
7y-8x=-42
what is the solution of the system of equations?
consistent or inconsistent?
dependent or independent?
Click here to see answer by rwm(914)

Question 460629: use the intercepts to graph the equation x+3y=6
Click here to see answer by Alan3354(69443)

Question 460670: d. Imagine you want to add a sprinkler system and the location of one section of the sprinkler line can be described by the equation
y = -1/2 x -4
Complete the table for this equation.
x y (x,y)
-6 -1
-2 -3
0 -4
2 -5
8 -8
If you can please help me with(x,y) I am confused
Click here to see answer by Alan3354(69443)

Question 460659: what are the plotting points I need to graph with problem y=1/5x-7

Click here to see answer by Alan3354(69443)

Question 460826: I'm 46 and "trying" to refresh my algebra. Any help is appreciated.
How do I solve AND graph?
Solve the conjunction -2 < = a+3 < 8
Thanks

Click here to see answer by rwm(914)

Question 460825: I'm 46 and "trying" to refresh my algebra. Any help is appreciated.
How do I solve AND graph this?
x/3 < = 5
Thanks

Click here to see answer by rwm(914)

Question 460866: if i am trying to graph a equation of greener lawns h=hours
c=cost how do I find it
$200.00 for intial fee plus $50 on hour
then for greener lawn $300.00 inital fee and $25 hour

Click here to see answer by stanbon(75887)

Question 460984: -x+y=2
2x+y=-1
solve the system of equation
Click here to see answer by MathLover1(20849)

Question 461005: a = 1 + b,
b = 5 − 2a
solve each system graphically
Click here to see answer by MathLover1(20849)

Question 461039: I would like help to find 5 points on the graph that can also be solutions to this problem. The first point i got was (0, 1/2) and i don't know how to get the other four points. My instructions were to note five points on the graph and one must be the y-intercept. Thank you
Click here to see answer by rwm(914)

Question 461078: A square has an area of 9x^2+30x+25. Find the length of a side.
The length of a side is ??? (simplify answer)
Write the area of each rectangle

This was my answer for inside the rectangle
9x x2
15 25

What is your answer?
Thanks Remi

Click here to see answer by rwm(914)

Question 461084: I need to create an equation of a nonlinear function. I don't know what this is. Can you please give me an example? Thanks so much.
Click here to see answer by oberobic(2304)

Question 461147: How do you graph a function (hyperbola, ellipse, rational etc.) without using a graphing calculator?
Click here to see answer by richard1234(7193)

Question 461217: Hello - please solve this non-function and explain why it is not a function:
solve y2 + 4x = 8
thanks!
Click here to see answer by stanbon(75887)

Question 461240: sketch the curve:
Click here to see answer by rwm(914)

Question 461242: sketch the curve :
Click here to see answer by rwm(914)

Question 461239: sketch the curve :
Click here to see answer by rwm(914)

Question 461238: sketch the curve :
Click here to see answer by rwm(914)

Question 461201: completion of table intercept method of

Click here to see answer by rwm(914)

Question 461195: completion of table intercept method of
y = 2x + 8
Click here to see answer by rfer(16322)

Question 461469: determine whether (0,9) is a solution of 7x-4y=-6
Click here to see answer by MathLover1(20849)

Question 461537: the sum of the present ages of Eric and his father is 58 years. In 10 years, his father will be twice as old as Eric will be at that time, Find their present ages
Click here to see answer by algebrahouse.com(1659)

Question 461552: i need help with the following questions PLEASE!!!!
Solve using the multiplication principle,
1) -2x> 1/9....the solution set x/x ___
2) graph the equation and identify the y-intercept X+Y=-9
3) find the slope of the line containing the pair of points (8,4) and (10,-5)
4) solve by elimination 4x+5y=5...8x+10y=10
5) solve by substitution 4x+5y=-3...x=4-6y
6)solve 8x-(3x+5)=5 X=__
7) simplify -3[-69-(52-70)]
8) solve the compound inequalities 6>-3x+5 or 9<= -5x+3
9) graph the system of inequalities y>= -3 x>= 5
Click here to see answer by solver91311(24713)

Question 461756: Hello,
I'm having difficulties setting up this word problem:
Sam bought 50 stamps at 14 and 22 cents each. He paid the postal clerk
$10.04. How many 22-cent stamps did he buy?
I tried to set the problem up like this:

x+y=50 letting the x=14 and y=22
y=x-50
14x + 22y = 50
14x + 22(50-x)=50
14x + 1100 -22x = 50
-8x = -1050
-8x/-8 = -1050/8
x= 131.25
Not sure where I went wrong. I appreciate any help. Thank you.
Click here to see answer by rwm(914)

Question 461758: find the center-radius form of the equation of a circle with center (4,8) and tangent to the X-axis.

Click here to see answer by Gogonati(855)

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