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

Tutors Answer Your Questions about Graphs (FREE)

Question 32067: Determine the equation of each line. Write the answer in standard form using only intergers as the coefficients.
1. (38) The line through (0, 9) that is parallel to the line 3x + 5y = 15
I'm pulling out my hair! What's a co-efficient?
Click here to see answer by joey_quizan(15)

Question 32070: Determine the equation of each line. Write the answer in slope intercept form.
4. (52) The line through (4, 0) that is perpendicular to the line x + y = 3
I can't figure out where to start graphing? Why can't I understand this?
Click here to see answer by stanbon(57282)

Question 32099: My question is this: 2y-x<8
I have turned it around to be -x+2y=8 and found the first set of ordered pair to help graph. x,0,y,4 But my book says the next ordered pair is -8x and 4y. I would like to know why? How did they get the second pair? I know that because of < it is a slashed line when you graph.
Any help would be greatly appreciated.
Thanks, Liz
Click here to see answer by venugopalramana(3286)

Question 32141: The line through (-2, 4) that is perpendicular to the x-axis
Am I on the right track, this line is horizontal?
Click here to see answer by stanbon(57282)

Question 32141: The line through (-2, 4) that is perpendicular to the x-axis
Am I on the right track, this line is horizontal?
Click here to see answer by mukhopadhyay(490)

Question 32079: Q: Solve each system by the addition method. Indicate whther each system is independent, inconsistent, or dependent.
18. -3x + y = 3
2x - 3y = 5
Click here to see answer by mukhopadhyay(490)

Question 31924: write the piont slope form of the equation of the line with slope -4 passing through the piont (5,2)
Click here to see answer by mukhopadhyay(490)

Question 32223: solve the parabola
y=-1/2(x-1)^2 + 2
i got the direction which is down, vertex (-1,2), aos x=-1, the y intercept -2.5 but i need help getting the x intercept
Click here to see answer by Earlsdon(6287)

Question 32078: Q: Solve each system by the substitution method. Indicate whether each system is independent, inconsistent, or dependent.
8. X - Y = 3
3X - 2Y = 3

Click here to see answer by mukhopadhyay(490)

Question 32284: I am desperate i have no idea how to graph this
3x+y=5
-2x+3y=4
I can only get the first equation wich is y=-3x+5 I can graph this.
But i cant come up with the second one. But i think it is y=2/3x+4/3.
Can some one please help me graph it i cant fuiguere it out.!!!

Click here to see answer by mukhopadhyay(490)

Question 31937: how would you graph 2f(x)-4 if you were given the graph of x?
Thank you,
Alexus
Click here to see answer by mukhopadhyay(490)

Question 32318: Bob and Moe set off at the same time on a 30km walk for charity. Bob who has trained all year for this event, walks 1.4km/h faster than Moe, but sees a friend en route and stops to talk for 20 min. Even with this delay, Bob finished the walk 2 hours ahead of Moe. How fast was each person walking, and how long did it take for each person to finish the walk?
Click here to see answer by Paul(988)

Question 32504: Can you help me find the slope and y-intercept of X+Y=8 and the other problem is 2x+y=6 ?
Click here to see answer by checkley71(8403)

Question 32507: Can you help me find the slope and y-intercept of X+Y=8 and the other problem is 2x+y=6 ?
Click here to see answer by stanbon(57282)

Question 32219: Discuss a real life situation where a straight-line graph might be applicable and explain why you think this might be true.
Help, lol :)
Click here to see answer by stanbon(57282)

Question 31835: The amount of money that a salesperson makes varies as the total amount of sales made.If the sales person receives $7,500 for selling a house for $120,000 how much will he make if he sells a house for $ 150,000?
Click here to see answer by checkley71(8403)

Question 32538: passes through (-4,-2) parrallell to -7x-5y=58
Click here to see answer by mukhopadhyay(490)

Question 32517: I have another piecewise defined function to graph:
f(x) = {x^2 if |x| <=1}
{1 if |x| >1}

If |x| being less than 1 I should get all positive values on the graph, right?
Thank you very much!
Click here to see answer by stanbon(57282)

Question 32516: I have a piecewise defined function to graph:
f(x) = {-1 if x<-1}
{1 if -1<=x<=1}
{-1 if x>1}
I get three lines that overlap so I know I'm wrong!
Thank you very much!
Click here to see answer by stanbon(57282)

Question 31908: I need some needed help with this.
Write an equation going thourgh the points (3,2)(-2,4)
I can only get to this point and then im stuck
4-2 / -2 - 3 = -2/5
Y=-2/5X + b
4=-2/5(-2) + B
from here i dont know what to do.
Click here to see answer by mukhopadhyay(490)

Question 32777: Find the slope and y-intercept of the line represented by each of the following equations. 2x-3y=6

Click here to see answer by stanbon(57282)

Question 32786: How do I Graph the solution set of x < –7.

Click here to see answer by stanbon(57282)

Question 32835: Plot points with coordinates (2, 3), (3, 4), and (4, 5) on a graph. What do you observe? Can you give the coordinates of another point with the same property?
I do not know how to create a graph in Excel to plot this...can someone help me?
Click here to see answer by josmiceli(9664)

Question 32853: I am struggling with this problem and don't know what it means or how to solve. Can anyone help me?
Find the constant of variation k.
m varies directly with n; m = 144 when n = 8

Click here to see answer by sarah_adam(201)

Question 32800: can you solve the equation m=500+.10x1200 and l=200+20x1200 thanks.

Click here to see answer by stanbon(57282)

Question 32899: How do I graph the solution set of x > -4
Click here to see answer by josmiceli(9664)

Question 32949: For the equation 4x – 2y = 6 find the
(a) slope 4/2
(b) y – intercept (0, -3)

Click here to see answer by sarah_adam(201)

Question 32950: Are the lines -2x + 3y = 6 and 2y = -3x + 4 parallel? Why or why not?
Click here to see answer by fz_shurtugal(3)

Question 32951: Solve the following equation
2x – 5 (4-x) = 3(2x – 6) + x – 2

Click here to see answer by checkley71(8403)

Question 33007: (y+2)/(y^2-y-2)+(y+1)/(y^2-4)=(1)/(y+1)
Click here to see answer by xcentaur(357)

Question 33069: PLease help!
The question needs to be explained step by step so I can explain and understand it for a project please?
Find the midpoint of the line segment PQ for P(2,-2), Q(3,4)
Thank you for your help.
Denise
Click here to see answer by sarah_adam(201)

Question 33089: Solve the following inequality--
2x + 8<= -16 + 8x
thanks in advance
Click here to see answer by Earlsdon(6287)

Question 33090: A rectangular yard is surrounded by a fence that is 4 feet longer than it is wide. If the perimeter of the fence is 424 feet, what are the dimensions of the yard it encloses?

Click here to see answer by Earlsdon(6287)

Question 33079: Please help explain and Solve?:
2 4
- (x+6)> - (x-8)
3 5
Express your answer in interval notation

Thank you!
Click here to see answer by mukhopadhyay(490)

Question 33149: 2)The volume of a cylinder (think about the volume of a can) is given by V = πr2h where r is the radius of the cylinder and h is the height of the cylinder. Suppose the volume of the can is 100 cubic centimeters.
a)Write h as a function of r.
Answer

b)What is the measurement of the height if the radius of the cylinder is 2 centimeters?
Answer
Show work in this space
Click here to see answer by sarah_adam(201)

Question 33207: W=gh-3ght^2; solve for g (The 2 is t squared). thanks
Click here to see answer by sarah_adam(201)

Question 33237: Solve the inequality and write the solution set in interval notation
(3/5)x + (2/3) (x - 5) < x
Click here to see answer by mukhopadhyay(490)

Question 33329: Write an equation of the line that is parallel to the given line and passes through the given point.
32.)y=2x+2, (3,2)
Click here to see answer by sarah_adam(201)

Question 33330: Write an equation of the line that is parallel to the given line and passes through the given point.
32.)y=2x+2, (3,2)
Click here to see answer by AnlytcPhil(1276)

Question 33410: Find the equation of the line with x-int -4 and y-int 6.
Click here to see answer by stanbon(57282)

Question 33248: Discuss a real-life situation where a straight-line graph might be applicable and explain why you think this might be true.
Think about a real-life situation that follows a linear equation, with the independent variable being years. What would the slope tell you about future years?

Click here to see answer by mszlmb(115)

Question 33259: (1)5x-y=5
(2) x+3y=6
(3) graph y=3x
(4) graph (-7, -4) and (-1, -10).
Click here to see answer by elima(1433)

Question 33231: graph y= 7x state the y-intercept
Click here to see answer by elima(1433)

Question 33165: Please explain in detail, I want to do the rest of them myself
Solve each compound inequality. State the solution set using interval notation and graph it

4. x <= 0 and x + 6 > 3

Click here to see answer by mukhopadhyay(490)

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