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 75689: Solve the system by graphing.
4x + 4y = 4
x + y = 1

Click here to see answer by jim_thompson5910(13794)

Question 75688: Are the following lines parallel, perpendicular, or neither?
L1 with equation x – 5y = 10
L2 with equation 5x + y = 5

Click here to see answer by jim_thompson5910(13794)

Question 75709This question is from textbook

: Can you help me solve this? my answer is not matching the textbook answer.
1/2(2x+3)>10
x>8.5 is my answer and the text book answer is x>17/2. Thank you.This question is from textbook

Click here to see answer by Earlsdon(4900)

Question 75695This question is from textbook Beginning Algebra

: Match each graph with the correct equation on the right.
This graph is a curve graph that goes from points(-2, 20) down to (0,0) and back up to (2,20) on the graph. The equations are:
a)y=-x^2+1
b)y=2x
c)y=x^2-4x
d)y=-x=1
e)y=-x^2+3x
f)y=x^2+1
g)y=x+1
h)y=2x^2
Thanks for your help.
This question is from textbook Beginning Algebra

Click here to see answer by ankor@dixie-net.com(6693)

Question 75788: What does f(x)=-3x-2 look like on a graph.
Click here to see answer by stanbon(26283)

Question 75785: I need an equation of a line passing through (6,-10) and ( 6,-6)
Click here to see answer by checkley75(3666)

Question 75790: Please help me with thses 2 problems and thanks

Factor completely: 9x^2-16y^2

Factor completely: 3x^2-2x-8

Click here to see answer by checkley75(3666)

Question 75793: please see if this problem is correct and thanks in advance

Factor completely: 3x^2+12x+12
3x^2+(2^2 3)x+2^2.3
3[(x+2)^2]
3(x+2^2)
Thanks a millon
Click here to see answer by bucky(1732)

Question 75789: 1. Factor out the GCF: = is my answer correct cane some one please check for me
4(x^2+9y^2)

2. Factor by grouping: 3x^2-12x+5x-20
(x-4) (3x+5) please see if my answer is correct when it say grouping what should i do .
thanks
Click here to see answer by Edwin McCravy(2922)

Question 76018: Find the x-intercepts.
y = x^2 + x - 9
I am a little confused on how to find the x intercepts, I am familiar with finding they Y-intercepts but I am not understanding the x-intercepts. Please help. Thanks.
Click here to see answer by checkley75(3666)

Question 73394: I am stuck on this problem hopefully someone can be of some assistance!
1) An open-top box is to be constructed from a 6 foot by 8 foot rectangular cardboard by cutting out equal squares at each corner and the 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.
Answer

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?
Answer

Click here to see answer by jim_thompson5910(13794)

Question 76228This question is from textbook Algebra!

: x-49(-x+5)+10This question is from textbook Algebra!

Click here to see answer by tutorcecilia(2042)

Question 76267: Graph f(x) = –2x + 2
Click here to see answer by tutorcecilia(2042)

Question 76294: Graph the line: y=2x-1
Click here to see answer by checkley75(3666)

Question 76262: Solve the system by graphing.
3x + y = 6
3x – y = 0

Click here to see answer by checkley75(3666)

Question 76532: I really need help with this stuff I get so confused.
Given f(x)=-4x-4, find f(2)
Click here to see answer by blondesrbetr37(2)

Question 76529: I really need help with this stuff I get so confused.
Graph the inequality.
x-y>2
Click here to see answer by blondesrbetr37(2)

Question 76530: For the function y = x2 - 6x + 8, perform the following tasks:
a) Put the function in the form y = a(x - h)2 + k.

Click here to see answer by jim_thompson5910(13794)

Question 76562: Please help me work out and graph y = 2x + 1/x -1
I know that x cannot equal 1 but do not know where to go from here. I have tried to subsitute other numbers for x to find the value of y but my grapgh looks very wrong. I am getting very confused.
Thank you
Tracy
Click here to see answer by rmromero(383)

Question 76579This question is from textbook Elementary and Intermediate algebra

: Graph the line that passes through the given point and has the given slope.
41. (3,1) m= 2/3
41. (-2, 3) m= -1
I am giving you two problems because the first one is in fraction and the other is not. So I need step by step instruction on how to do this.
Many Thanks!
AmyThis question is from textbook Elementary and Intermediate algebra

Click here to see answer by ankor@dixie-net.com(6693)

Question 76601: questions----- Evaluate 2x-3y when x=-5 and y=-4 ?
Click here to see answer by checkley75(3666)

Question 76697: Graph

y=-1/3x+1

y=1/3x+1
Click here to see answer by funmath(2873)

Question 76696: Graph
y = –3x + 1
y = 3x + 1

Click here to see answer by checkley75(3666)

Question 76796: Find the x-intercepts. y=x^2 -7x +11.
I am not understanding how to do this and need some assistance. Thanks.
Click here to see answer by chitra(359)

Question 76772: Find the slope and y-intercept of the line represented by each of the following equations.
2x-3y=6
Please help.
Click here to see answer by checkley75(3666)

Question 76824: Please help me. I am not doing so good with this one.
Find the slope and y-intercept.
3x + 8y = 72

Click here to see answer by Edwin McCravy(2922)

Question 76821: Graph using the intercept method: x + 3y = 6.
Click here to see answer by checkley75(3666)

Question 76819: Graph y = –2x + 1.
Click here to see answer by checkley75(3666)

Question 76957: Solve the system by graphing.
3x + y = 6
3x – y = 0

Click here to see answer by tutorcecilia(2042)

Question 76955: Graph x = 3

Click here to see answer by funmath(2873)

Question 76959: Solve the system by substitution.
x + 3y = –8
5x + 2y = 12

Click here to see answer by checkley75(3666)

Question 77103: The question is
Slope: 5; y-intercept: (0, -2)
I believe to figure the answer I would use:
y=5x-2
and the coordinants would be
(5,0)
(0,-2)
I am completely confused. Any help you can give would be great

Click here to see answer by checkley75(3666)

Question 77149: Would you please help me with this:
Solve the system of equations by graphing
y=2x-3
y=3-x
# 2. graph the line
2x-3

Click here to see answer by checkley75(3666)

Question 77193: For the equation x-2sqrtx=0 , perform the following:
a) Solve for all values of x that satisfies the equation.
Answer:
Show work in this space.

b) Graph the functions y = x and on the same graph (by plotting points if necessary). Show the points of intersection of these two graphs.
Graph:

Points of intersection:

Click here to see answer by stanbon(26283)

Question 77192: For the function,
a) Give the y values for x = -1, 0, 1, 2, 3, 4.
Answer:
Show work in this space.

b) Using these points, draw a curve.
Show graph here.

Click here to see answer by stanbon(26283)

Question 77194: x -2 -1 0 1 2
y .111 .333 1 3 9
Given the table above, graph the function, identify the graph of the function (line, parabola, hyperbola, or exponential), explain your choice, and give the domain and range as shown in the graph, and also the domain and range of the entire function.
Graph:
Graph Type:
Explanation:
Domain:
Range:

Click here to see answer by stanbon(26283)

Question 77216: Please help.
Rewrite the middle term as the sum of two terms and then factor completely.
12w^2 + 19w + 4

Click here to see answer by THANApHD(104)

Question 77277: what is the equation of the axis of symmetry of the graph y=x^2-4x+1?
Click here to see answer by Nate(3495)

Question 77298: How do I Graph = x-4y=8?????????????????
Click here to see answer by stanbon(26283)

Question 77308:
I need a step by step explaination of this problem's solution. i have tried it many different times. My graphing calculator is telling me that the answer is -3.23, but everytime i do the problem manually, i get a different answer - usually 3.26 or 3.24 or even 3.65, so... can you help?
Click here to see answer by stanbon(26283)

Question 77262: the graph of the equation y=x^2+2x-8 intersects where on the x-axis?
Click here to see answer by checkley75(3666)

Question 77256: which is an equation of the axis of symmetry of the grapd y=x^2-4x+1?
Click here to see answer by josmiceli(3012)

Question 77212: Please help.
A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce, and the sweaters take 14 hours. The labor available is limited to 40 hours per week, and the total production capacity is 5 items per week. Write a system of inequalities representing this situation, where x is the number of scarves and y is the number of sweaters. Then graph the system of inequalities.

Click here to see answer by ankor@dixie-net.com(6693)

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