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

Tutors Answer Your Questions about Graphs (FREE)

Question 181047: Please help with plotting the graph of f(x)= 5^x. Thanks in advance.
Click here to see answer by Mathtut(3670)

Question 181049: please help solve this problem.
Solve the inequality and graph the solution set.
2x - 11 < 9

Click here to see answer by Mathtut(3670)

Question 181045: 2x-5y=15
Click here to see answer by Mathtut(3670)

Question 181044: please help me solve theses problems
Simplify: 4 to the 2nd power � 2(-4x + 2) � 6x/3
Simplify: -3to the 2nd power + 2 [ 20 ( 7 � 11) ]
Click here to see answer by Mathtut(3670)

Question 181052: What is the graph of f(x)= log5x ?
Click here to see answer by josmiceli(19441)

Question 181080: is there a trick to using a graphing calculator i'm really lost and have a big project due in 2 weeks and it depends on using the graphing software and calculator any information will be appreciated.
Click here to see answer by eperette(173)

Question 181129: please help me solve this problem.
Solve the system:
X+y=-5
2x-y=-7

Click here to see answer by stanbon(75887)

Question 181127: Trees in urban areas help keep air fresh by absorbing carbon dioxide. A city has $2100 to spend on planting spruce and maple trees. The land available for planting is 45,000 square feet. Spruce trees cost $60 to plant and require 600 square feet of space. Maple trees cost $40 to plant and require 900 square feet of space. Spruce trees absorb 650lb/yr of carbon dioxide. maple trees absorb 300lb/yr of carbon dioxide.
1) write the two inequalities for this problem.
2) graph both on the same coordinate grid.
I have no idea where to start. Are the two inequalities the amount of space used and the ampunt of CO2 absorbed? Please help....
Click here to see answer by stanbon(75887)

Question 181142: this project is due in 2 weeks and i have no idea how to use this graphing calculator can some one please help we were going to go over this in class today but my kids were out of school.create a graph of the following lines and indicate their points of intersection y=3/5x-4,y=-1/3x+2,y=-5-7 i am supposed to be using graph software and a graphing calculator any tips or instruction will be greatly appreciated thanks
Click here to see answer by solver91311(24713)

Question 181197: #52
find the values of x for which f(x) = g(x)
f(x) = x^2 +2x + 1, g(x) = 7x - 5
Click here to see answer by Mathtut(3670)

Question 181196: #60
Write slope-intercept form of the equation of line through the point
(-3.9,-1.4) perpendicular to 6x +2y = 9
Click here to see answer by Alan3354(69443)

Question 181194: Determine whether the lines L1 and L2 passing through the pairs of points are parallel, perpendicular or neither.
#56
L1 (4,8), (-4,2)
L2 (3,-5), (-1, 1/3)
Click here to see answer by stanbon(75887)

Question 181212: i don't know how to find the slope, x and y intercept of the following equation:
y-6=(x-3)
i was thinking maybe the slope might be 0 but i'm not positive because i've never seen a problem like this.
Click here to see answer by Alan3354(69443)

Question 181231: I just dont get how to do this, I am really bad at math and dont listen very well but here is the question:
The directions say to: Solve each open sentence. Then Graph the solution set.
7.[x-5]=8
8.[b+9]=2
Click here to see answer by Alan3354(69443)

Question 181235: Hi.
May I have some help solving each system graphically if possible?
{3x-y=-3
2x+y=-7
thanks
H.C.
Click here to see answer by Mathtut(3670)

Question 181397: write the equation in slope intercept form of the line that passes through (5,4) and (-6,1)
Click here to see answer by stanbon(75887)

Question 181394: Graph f(x)=-x�+3x+1 by making a table of values. Than determine the consecutive values of x between which each real zero is located.
Click here to see answer by Mathtut(3670)

Question 181396: graph the inequality
y<-1/2x-3
Click here to see answer by Mathtut(3670)

Question 181546: write an equation that gives the income y for working x hours
Click here to see answer by Mathtut(3670)

Question 181553:
if a phone plan charges a flat rate of $20 per month plus .50c per call.
Write an equation of the function.
Click here to see answer by Alan3354(69443)

Question 181553:
if a phone plan charges a flat rate of $20 per month plus .50c per call.
Write an equation of the function.
Click here to see answer by Mathtut(3670)

Question 181576: If a soldier in basic training fores a rocket propelled grenade straight up from the ground level with an initial velocity of 256 ft/sec, then its height above the ground at time t seconds is given by the function h(t) = -16t^2 + 256t.
A. what is the maximum height reached by the grenade?
B. How long does it take for the grenade to reach the ground?
Click here to see answer by Alan3354(69443)

Question 181626: Hello, I need to find the slope of a line, but I'm confused when reading the graph. The point on the x axis is 4 and the point on the y axis is 5. So how would I write the formula. I don't know if 0 should come first or the actual number of 4 and 5. I have (0,4) and (5,0).
Please help
Click here to see answer by stanbon(75887)

Question 181694: write a linear equation to predict the median age that men marry M for any year T
Click here to see answer by Mathtut(3670)

Question 181714: Which best describes the graph of y=3?
A) A horizontal line through the point(1,3)
B) A vertical line through the point(1,3)
C) A horizontal line through the point(3,1)
D) A horizontal line through the point(3,1)
Teacher said the answer is A. Why is it A?
Click here to see answer by stanbon(75887)

Question 181816: The Addition Method x-2y=-1 Solve system by addition
-x+5y=4
Click here to see answer by jim_thompson5910(35256)

Question 181816: The Addition Method x-2y=-1 Solve system by addition
-x+5y=4
Click here to see answer by Mathtut(3670)

Question 181828: Find the slope and y-intercept of the line y = 3x + 4
I tried so hard I just can't get it.
Click here to see answer by jim_thompson5910(35256)

Question 181882: The line through (-2,-1) that is parallel to the line 5x + 3y =9. I am having a horrible time trying to write solve this and then write it into standard form containing only integer coefficients.
Click here to see answer by jim_thompson5910(35256)

Question 181883: The line through (2,-3) that is perpendicular to the line y= -4x + 8 written in standard form containing only integer coefficients. I am having a horrible time with these graphs, any help is greatly appreciated!
Click here to see answer by jim_thompson5910(35256)

Question 181932: Plot the graphs of the following functions.
f(x) = 5x
f(x) = 4x+2
f(x) = (1/3)x
f(x) = log5x
How do I get the solutions for each of these functions?
Click here to see answer by Alan3354(69443)

Question 181937: draw the graph of the following linear function and give the domain and range: h(x)=-2x+3?
Click here to see answer by jim_thompson5910(35256)

Question 181945: Given g(x)=5/x+3 find g(-3)
Click here to see answer by eperette(173)

Question 181947: graph the function f(x)=x^2-2
Click here to see answer by jim_thompson5910(35256)

Question 181965: Refer to the graph given below and identify the graph that represents the corresponding function. Justify your answer.
y = 4x
y = log4x
(I have provided a link of the graph)
http://img8.imageshack.us/my.php?image=65511103jb5.png
Click here to see answer by jim_thompson5910(35256)

Question 181968: Plot the graphs of the following functions.
f(x) = 5^x
f(x) = 4^x+2
f(x) = (1/3)^x
f(x) = log5x (I'm not sure how to format the "5", It's more like a smaller 5 that is lower and in between the g and the x)
I asked this question previously, But I realized the formatting didn't transfer over. thanks for all the help
Click here to see answer by jim_thompson5910(35256)

Question 181982: Refer to the graph given below and identify the graph that represents the corresponding function. Justify your answer.
y = log4x *the 4 is actually a smaller 4 below to the right of the "log"*

A link of the graph has been provided below
http://img8.imageshack.us/my.php?image=65511103jb5.png
Click here to see answer by Alan3354(69443)

Question 181986: How would you graph
f(x) = log5x (the 3 is actually smaller and to the bottom of *log*, I'm not sure how to represent that)
Click here to see answer by Alan3354(69443)

Question 181954: graph the function g(x)=(x-1)^3
Click here to see answer by Mathtut(3670)

Question 182001: Complete the given ordered pairs for the equation x-5=0
x y
4
5
-2
Click here to see answer by Alan3354(69443)

Question 182000: Find the unknown value in the percent porportion part/whole=percent/100
part=10, whole =20
___%
Click here to see answer by nerdybill(7384)

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