Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

Tutors Answer Your Questions about Linear-equations (FREE)

Question 83316: find solution graphically to the system of linear equations
2x=4
y=-3
Click here to see answer by rapaljer(4671)

Question 83464: Solve the following system of linear inequalities by showing work and graphing.
x � 3y > 6
3x + 2y > 12
Can anyone offer any help on this problem?

Click here to see answer by stanbon(75887)

Question 83436: ONE GRAPH WITH NEGATIVE SLOPE AND POSTIVE INTERCEPT,AND EQUATION FOR EACH GRAPH
Click here to see answer by rapaljer(4671)

Question 83308: Q4: For the linear system
2x - y + 3z = 5
3x + y + 4z = 2
-x +5y � 2z = -2
(i)Write the system in matrix from AX = B
(ii)Obtain the determinant and inverse of A.
(iii)Solve the system.
Click here to see answer by Edwin McCravy(20055)

Question 83489: Graph lines y=x+2 and y=2x-1. What is the intersection point, if any?
Click here to see answer by Nate(3500)

Question 83493: I am completely lost with this problem:
Solve:x^2/2-x/4=3/4 I greatly appreciate ANY help.
Click here to see answer by Earlsdon(6294)

Question 83113: Rewrite each equation in vertex form. Then sketch the graph.
19. a. y=4x^2+8x-4
b. y=-3x^2-4x-1
c. y=-5x^2=10x+1
d. y=-2x^2+10x-11
e. y=3x^2+9x+6
Click here to see answer by Edwin McCravy(20055)

Question 83510: I am not understanding "undefined"
Find the slope of the line passing through the points (2,-5) and (-10,-5)
a). -12
b). undefined
c) 1
d) 0
please help
Click here to see answer by stanbon(75887)

Question 83112: Rewrite each equation in vertex form.Then Sketch the graph
7. a. y=x^2-6x+6
b. y=2x62+4x-5
c.y=x^2+2x+1
d.y=x^2+5x+5/4
e.y=-2x^2+8x-9
Click here to see answer by jim_thompson5910(35256)

Question 83574: can you please help me solve these 2 and graph the lines-- it must be put in slope intercept form so I can identify the slope and y thank you
x + 2y = 6 I'm not sure is it (1/2,3)

2x + y = 9 I'm not sure is it (2,6)
Click here to see answer by bucky(2189)

Question 83580: can you please graph and put into slope form. I need the y intercept and then the slope point Thanks
-3x + 4y = 2
-2x - y = -3
Click here to see answer by jim_thompson5910(35256)

Question 83595: Tutor could you please help me in identifying the slope and the y-intercept of the graph of this equation? Thank you very much for your help
x+7y=6
Click here to see answer by jim_thompson5910(35256)

Question 83605: hi, can you help me put this in slope form and graph thanks
-x - y = -8
2x + 3y = 12
Click here to see answer by jim_thompson5910(35256)

Question 83572: ) Find the degree measure of the angle marked z.
z- 6
3z
Z
----------------------This is a triangle z is the end point z-6 is on the end with 3z. can you solve this without a picture of a triangle?
Click here to see answer by uma(370)

Question 83556: Complete the ordered pairs for the equation y = 8x + 16.

( ,0),(1/8, ),(0, ),(-1/8, )
Click here to see answer by checkley75(3666)

Question 83717: Hi! I have a question on how to work this problem. I know what the answer would be if they said what temperature would it be after 3 hours, but I do not even know what a linear relationship is.
The problem: Write a linear relationship that describes the out side temperature, T, as a function of the number of hours since 8:00am., h. At 8:00am the outside temperature was 76(degrees)F and each hour the temperature rose 3 degrees.
Thanks for your help,
Melissa
Click here to see answer by stanbon(75887)

Question 83757: can you please help again, put each in slope form and show me 3 graph. Thanks so much. I'm not understanding how you get those points
-x+3y=-9
3x-2y=6
4x-3y=6
Click here to see answer by jim_thompson5910(35256)

Question 83770: I have a problem help
Find the value for A so that the given pair of lines will be parallel
-7x + 8y = 13
Ax + 4y = 15
find the value for A so that the given pair of lines will be perpendicular
20x + 5y = 18
Ax +17y = 9
Click here to see answer by Earlsdon(6294)

Question 83795: evaluate the algebraic expression.
11-(3x-2(5+3x)) when x=2
Click here to see answer by chitra(359)

Question 83794: use the distributive property to rewrite the expression without parenthesis.
-2(8w-7x-5)
Click here to see answer by lekelly(20)

Question 83840: Can you please help me find the equation of the problem with a slope of 2 and the points (4,-8)
Click here to see answer by jim_thompson5910(35256)

Question 83840: Can you please help me find the equation of the problem with a slope of 2 and the points (4,-8)
Click here to see answer by Earlsdon(6294)

Question 83839: Can you please help me find the slope for each when given the these points..
(4,3)(-2,1)
(3,6)(3,2)

Click here to see answer by jim_thompson5910(35256)

Question 83793: find an equation for the line with the given properties.
slope=-3/7, passes through (4, -7)
Click here to see answer by checkley75(3666)

Question 83884: Hello out there,I'm writing for some help with some slope-intercept problems,the first one is,Write the equation in slope-intercept form of the line passing through each pair of points:(-8,2)and(0,6).The next one is,Write the equation in slope-intercept form of the line passing through each pair of points :(6,-2)and (3,-4).Next is,Write an equation in slope-intercept form of the line having the given slope and passing through the given point:m=0,(0,-3).And the last one is,Write the point-slope form of the line that passes through (3,-3)and (5,1),thanks for whoever can help.
Click here to see answer by jim_thompson5910(35256)

Question 83954: Graph the equation
x+4y=5
Thanks!I am having trouble understanding how to get this on a graph.
Click here to see answer by checkley75(3666)

Question 83953: Graph the equation
x-2y=6
All I have been able to come up with is coordinates of (6,0)
(0,-3)
are these right and can you graph this?
Click here to see answer by checkley75(3666)

Question 83956: Graph the line with the line through (-2,5) with a slope -1.
Thanks!
Click here to see answer by jim_thompson5910(35256)

Question 83960: Interest rates. A credit manager rates each applicant for a car loan on a scale of 1-5 and then determines the interest rate from the accompanying table. Find the equation of the line in slope-intercept form that goes through these points.
Credit rating Interest rate (%)
1 24
2 30
3 16
4 12
5 8

Click here to see answer by jim_thompson5910(35256)

Question 83955: Demand equation. Helen�s Health food usually sells 400 cans of Propac Muscle Punch per week when the price is $5 per can. After experimenting with the weekly demand can be found by using the equation d=600-40p where d is the number of cans and p is the price per can.
a) will Helen sell more or less Muscle Punch if she raises her price from $5?
b) What happens to her sales every time she raises her price by $1?
c) Graph the equation
d) What is the maximum price that she can charge and still sell at least one can?

Click here to see answer by Nate(3500)

Question 82619: Y=1_
x-2
Give the y values for x=-1, 0, 1, 2, 3,4,
(Show the work and how you got it, if yo don�t mind)
Using these points, draw a curve:

Click here to see answer by jim_thompson5910(35256)

Question 84035: solve the following equation:
12=8-2p
Click here to see answer by checkley75(3666)

Question 84017: What points fall on the line 2x-y=3?
Click here to see answer by checkley75(3666)

Question 84036: solve the following equation:
12x+3 divided by 11= 1
Click here to see answer by checkley75(3666)

Question 83918: -4-k=-3k+4
solve algebraically for the variable
Click here to see answer by checkley75(3666)

Question 84044: Help!! I'm math stupid! I have no idea how to solove this problem, unforutnately I'm running on a dealine. Can anyone assist me?
The volume of a can (like tin can) is given by V = πr2h where r is the radius of the can and h is the height of the cylinder. Suppose the volume of the can is 121 cubic centimeters.
a) Write h as a function of r. Keep "" in the function's equation.
Answer:
Show work in this space.

b) What is the measurement of the height if the radius of the can in 3 centimeters? Round your answer to the hundredth's place.
Answer:
Show work in this space.

c) Graph this function.
Show graph here.

Click here to see answer by jim_thompson5910(35256)

Question 84043: I need some real help on the following problem. Just can't get it! Can anyone help me with this?

An open-top box is to be constructed from a 4 foot by 6 foot rectangular cardboard by cutting out equal squares at each corner and folding up the flaps. Let x denote the length of each side of the square to be cut out.
a) Find the function V that represents the volume of the box in terms of x.
Show answer here:

b) Graph this function and show the graph over the valid range of the variable x..
Show Graph here.

c) Using the graph, what is the value of x that will produce the maximum volume?

Click here to see answer by jim_thompson5910(35256)

Question 84054: Find two factors of 15 with a difference of 2.
Click here to see answer by Edwin McCravy(20055)

Question 84053: List the factors of the following number 90
Click here to see answer by Edwin McCravy(20055)

Question 84150: Determine graphically the vertices of the triangle, the equation of whose sides are given as y = x; y = 0; 2x + 3y = 10. Interpret the result.

Click here to see answer by venugopalramana(3286)

Question 84149: Plot the graph of the equations 2x + 4y = 10 and 3x + 6y = 12 and interpret the result.

Click here to see answer by checkley75(3666)

Question 84148: Plot the graph of the equations 2x - 3y = 6 and 2x + y = -10 and interpret the result.

Click here to see answer by checkley75(3666)

Question 84144: write the equation of the line with x-intercept (-3, 0) and undefined slope.
Click here to see answer by funmath(2933)

Question 84216: [(2 + 3)TO THE POWER OF 2 + 4 � 5] + 7=
Click here to see answer by sofiyacherni(99)

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