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

Tutors Answer Your Questions about Graphs (FREE)

Question 91280: Plot the point with coordinates (3, �5).
Click here to see answer by jim_thompson5910(35256)

Question 91394: rewrite each equation as a function of x.
18. -3x + 4y =11

Click here to see answer by jim_thompson5910(35256)

Question 91393: I need help solving evaluate each function for the value specified thank you in advance
f (x) = x2 -7x +10; find (a) f (0), (b) f (5), and (c) f (-2)
Click here to see answer by jim_thompson5910(35256)

Question 91397: if f (x) + 5x -1, find the following:
f (a -2)
please help
Click here to see answer by jim_thompson5910(35256)

Question 91396: if f (x) = 4x -3, find the following:
f (-1)

Click here to see answer by jim_thompson5910(35256)

Question 91395: graph the functions.
f (x)=2x - 5

Click here to see answer by jim_thompson5910(35256)

Question 91391: Please help
Graph the following inequalities.

3x -4y <12
Click here to see answer by jim_thompson5910(35256)

Question 91409: A line that is perpendicular to this equation would have what slope? Y = 0.2X � 3
Click here to see answer by checkley71(8403)

Question 91398: If the inventor charges $4 per unit, then her profit for producing and selling x units is given by the function
P(x) = 2.25x -7000
(a) What is her profit if she sells 2000 units?
(b) What is her profit if she sells 5000 units?
(c) What is the break-even point for sales?

Click here to see answer by checkley71(8403)

Question 91392: please help solve this problem thank you in advance
You have at least $30 in change in your drawer, consisting of dimes and quarters. Write an inequality that shows the different number of coins in your drawer
Click here to see answer by checkley71(8403)

Question 91430: One day, the temperature at 8:00 A.M. was 47�F, and by 1:00 P.M. the temperature was 52�F. What was the hourly rate of temperature change?
I think the answer is 1 degree F/h (difference in temperature divided by 5 hours)
Is this correct?
Thanks for your help!
Click here to see answer by checkley71(8403)

Question 91475: given f(x)=4x^2-1 /x^2-16

a. Find the x-intercept(s).
b. Find the y-intercept(s).
c. Find the vertical asymptote(s) (write as an equation of a line).
d. Find the horizontal asymptote(s) (write as an equation of a line).
e. For x>4, is there a value which F(x) cannot exceed, AND/OR a value which F(x) cannot fall below? Explain your answers.
f. Find the maximum or minimum function value in the interval -4 x 4, and state whether it is a maximum or minimum value for that interval.
g. Describe what happens on the graph when x approaches infinity.
Click here to see answer by stanbon(75887)

Question 91473: Find the horizontal asymptote of F(x) = 3x/x^2-4
Click here to see answer by stanbon(75887)

Question 91499: I asked this question already, but I got a different answer than the tutor.
The quesion is:
Find the y-intercept of -2x+2y=16
This is how I solved it:
-2x+2y=16
2y=2x+16
y=2x/2 +16/2
y=x + 8
So, the y-intercept is (0,8)
Is this correct?
(The tutor said the answer was (0,-8))
Thanks!
Click here to see answer by stanbon(75887)

Question 91501: Find the slope of any line perpendicular to the line through points (3,12) and (5,4).
I found the slope of the two points, and then I found the negative reciprocal, which is 1/4.
Is this correct?
Thanks for your help!
Click here to see answer by stanbon(75887)

Question 91493: Given: F(x) = x/ x^2-9
Graph-
f. Is the function increasing or decreasing in the interval -3<- x <- 3?
g. As x approaches 3 from the left, what happens to the function values?
h. As x approaches 3 from the right, what happens to the function values?

Thank you

Click here to see answer by stanbon(75887)

Question 91498: A line passing through (-8, 2) and (-1,y) is perpendicular to a line with slope -7/5. Find the value of y.
I worked it out to be y=7.
Is this correct?
Thanks so much!
Click here to see answer by bucky(2189)

Question 91583: This is from a worksheet:
Graph this equation: y=-1/3x+4
Not sure I have the correct values:
y= -1/3 * 1 + 4 = 1/3 + 4 (value of y: 3)
y= -1/3 * 2 + 4 = 1 + 4 (value of y: 4.5)
Then must graph this equation.
Thanks sooo very much!
Click here to see answer by stanbon(75887)

Question 91584: This is from a worksheet:
Graph this equation: 3y-9x=30
Then must graph this equation.
Thanks very much!
Click here to see answer by ankor@dixie-net.com(22740)

Question 91613: I am having a hard time coming with points for the following problem.
I know how to do the work to a certain extent however, I don't know how
to work the problem with a fraction. I'm not so sure on what points to use
when setting up the x and y axis.
I have to graph the following
y = 3/4x + 2
Click here to see answer by stanbon(75887)

Question 91619: i have to write an equation of the line passing through (5,0) and parallel to the line y=5x-2...Can you please help me..
thanks,

Click here to see answer by stanbon(75887)

Question 91690: Determine which two equations represent perpendicular lines.
a) y = 1/9 x + 3
b) y = 9 x - 3
c) y = 1/9 x - 3
d) y = - 1/9 x - 3
these are fractions and the x is centered, next to the plus sign there are no parenthese in my question.
Click here to see answer by scott8148(6628)

Question 91749: I am in need of some additional help with
Solving an inconsistent system
2x-y=4
2x-y=6
Am I off to a good start?
2x+y=2
y=2x+4
2/2+ 4/2
y=x+3
(0,2) okay I need another solution for the problem. I'm not sure how to go about getting it. Please help

Click here to see answer by stanbon(75887)

Question 91866: solve and graph the solution set of x^2 - x - 6 < 0 im so bad at graphing can someone show me??please
Click here to see answer by stanbon(75887)

Question 91245: Find the horizontal asymptote of F(x) =5x^2+1/ x^2+2x+1
Click here to see answer by mathispowerful(115)

Question 90456: Please help with graphing these equations:
The fraction is throwing me off on this one.
y= -1/3 x+4
3y-9x = 30
Thanks in advance!! You all are awsome!
Click here to see answer by mathispowerful(115)

Question 91943: Evaluate log r 0.
Click here to see answer by stanbon(75887)

Question 91941: Write x ^4 = y in logarithmic form.

Click here to see answer by tutorcecilia(2152)

Question 90724: Solve the system by graphing.
2x + y = 4
x + y = 3

Click here to see answer by mathispowerful(115)

Question 90961: Graph f(x) = �x � 2
Click here to see answer by mathispowerful(115)

Question 90427: Solve the system by graphing.
x � 2y = 8
x + y = �1

Click here to see answer by mathispowerful(115)

Question 91945: The population P of a city grows exponentially according to the function p(t) = , where t is measured in years. When, to the nearest year, will the population reach 24,000?
Click here to see answer by mathispowerful(115)

Question 91884: Please help solve!
Find the equation in standard form for each line that satifies the given conditions:
a) parallel to 5x + y = 3 and passes through (0,1)
b) parallel to the y axis and passes through (1, -2)
Thanks so much!
Click here to see answer by mathispowerful(115)

Question 90960: Graph f(x) = �2x + 4
Click here to see answer by mathispowerful(115)

Question 91940: Write log 10 N = x in exponential form.
Click here to see answer by bucky(2189)

Question 91972: Solve the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent.
38. 10x +2y = 7
Y=-5x +3

Click here to see answer by homeworkhelpanytime(21)

Question 92035: I think this is the correct place to put this. I'm doing a practice packet I have to turn in on the first day of school. Here are the problems.
Find the distance between the given points.
1. (-5,-7) and (7, 9)
2. (6, -17) and (18, -5)
If you could tell me the formula and what to do I think I can get it. (Step by step please)
Click here to see answer by stanbon(75887)

Question 92060: I cannot understand how to find b in y = mx + b?
as follows:
Question: Put in y = mx + b form, then graph. x-intercept=4, slope=-3
so I wrote it as follows:
y=-3x+b
= 0=-3(4)+b
and here I have the problem, to find b I dont know i I should multiply 3(4) first, or try 0+3=(4)+b... or 0/4=3+b...
I usually come up with b=12, b=-12, b=3/4.... and they say the answer is 4, as in y=-3x+4
Thank you in advance for any aid that you can offer me...
yours truly, Michael

Click here to see answer by funmath(2933)

Question 91942: Evaluate log 7(1/49).
Click here to see answer by scott8148(6628)

Question 92044: Graph the function f(x) = log4 x.
Click here to see answer by Nate(3500)

Question 92088: Can someone please help me solve this problem. I am having a lot of trouble working it out.
L has y-intercept (0,-3)and is parallel to the line with equation y=2/3x+1.
Thank you.
Click here to see answer by funmath(2933)

Question 91665: Graph each inequality:
2x - y + 3 greater than or equal to 0

Click here to see answer by mathispowerful(115)

Question 92109: how do i graph:

and

... on the same coordinate plane?
Click here to see answer by stanbon(75887)

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