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

Tutors Answer Your Questions about Graphs (FREE)

Question 70792: f(x)= 72x^2+ 13x-15 how do i graph this function by hand and find the x and y interceptsand the vertex as well as any other points plotted
Click here to see answer by josmiceli(19441)

Question 70605: how do you solve:
x>2+y
y>1
Click here to see answer by ankor@dixie-net.com(22740)

Question 70844: Evaluate each function for the value specified.
f(x)= x� - 7x + 10;
find
(a)f(0),
(b)f(5),and
(c)f(-2).
Click here to see answer by bucky(2189)

Question 70845: Rewrite each equation as a function of x.
-3x + 4y = 11
Click here to see answer by checkley75(3666)

Question 70913: Solve the following systems by graphing.
2x - y = 4
2x - y = 6
Click here to see answer by bucky(2189)

Question 70914: Solve the following systems by graphing.
x - 2y = 8
3x - 2y = 12
Click here to see answer by bucky(2189)

Question 70979: I am working on a test review sheet from my professor and having trouble with one of the problems. We are studying inequalities in 2 variables and graphing. Here is the problem...Graph 7x > 3y. I have tried dividing both sides by 3 and adding -3y to both sides, but I must be in the middle of a brain fog and can not figure it out. Any help would be GREATLY appreciated.
Thanks,
Yvonne
Click here to see answer by jim_thompson5910(35256)

Question 70882: y=3/2x-1/4
otherwise seen as:
y=1.5x-.25
Click here to see answer by checkley75(3666)

Question 71022: Can you please help me solve equation...instructions...graph using the intercept method: 2x-5y=10
Click here to see answer by Alg_Whiz_Kid(6)

Question 71021: Can you please help me solve this problem...instructions...determine which two equations represent perpendicular lines.
(a)y=4/9x-3
(b)y=3x-4/9
(c)y=-1/3x+4/9
(d)y=1/3x-4/9
Click here to see answer by Alg_Whiz_Kid(6)

Question 71071: graph equation
y=1/3x
Click here to see answer by checkley75(3666)

Question 71124:
graph the equation
5x-3y=-3
Click here to see answer by checkley75(3666)

Question 71125: Can you please help me solve the equation...instructions...solve the system by graphing.
4x + 2y = 10
y = 4
Click here to see answer by checkley75(3666)

Question 71123: graph the equation 5x-3y=-3
Click here to see answer by stanbon(75887)

Question 71070: graph equation
y=1/3x
Click here to see answer by elima(1433)

Question 71150: 1-y=2
Click here to see answer by mathman409(67)

Question 71193: Let x=rate invested at 5%.
Then the rate invested at 2% is 25,000-x
You have: 0.05x+0.02(25,000-x)=980
0.05x+500-0.02x=980
0.03x+500=980
0.03x=480
x=16000
$16,000 was invested at 5% and 9,000 at 2%.
Click here to see answer by galactus(183)

Question 71210: given the equation y=-5x+1
a. find the slope of a line parallel
b. find the slope of a line perpendicular
c. graph a parallel line that goes throught the point (4,-1)
Click here to see answer by checkley75(3666)

Question 71185: Graph 3x + 2y = 6.
Click here to see answer by checkley75(3666)

Question 71226: I need to write an equation in slope-intercept form for the line passing through the point at (-2,3) with slope 6.
I've got up to y=6x+b. Just not sure how to get the b, the y-intercept.
Click here to see answer by stanbon(75887)

Question 71209: given the equatoin y=x
a. find the lsope of a line parallel
b. find the slop of a line perpendicular
c. graph a perpendicular line that goes through the point (-2,-3)
Click here to see answer by josmiceli(19441)

Question 71008: Solve the following systems by addition. If a unique soution does not exist, state whether the system is inconsistent or dependent.

The idea is to multiply a row by something so that when it's added to the other row a variable is eliminated. In this case, multiply the top row by -5 and the bottom row by 2.

Add and eliminate x:

Click here to see answer by galactus(183)

Question 71195: The graphics calculator display shows a table of x- and y- values for a linear equation y=mx+b. Determine the slope and y-intercept.
x ------ y1
-3 ------ 4.5
-2 ------ 4
-1 ------ 3.5
0 ------ 3
1 ------ 2.5
2 ------ 2
3 ------ 1.5
x=-3

Click here to see answer by bucky(2189)

Question 71248: Someone please show me how to do this

Determine the point A(x,y) so that the points A(x,y), B(0,3), C(1,0) D(7,2) will be the vertices of a parallelogram.
I need an example on how to solve this problem because I have a bunch more like it.
Thanks
Click here to see answer by checkley75(3666)

Question 71267: solve the system by the graphing method
x+y=6
2x-y=-4
Click here to see answer by checkley75(3666)

Question 71068: graph equation
y=1/3x
Click here to see answer by funmath(2933)

Question 71347: please help me find the slope of x+4y=8. The book's directions say find the slope of each line by solving for y.
Click here to see answer by checkley75(3666)

Question 71347: please help me find the slope of x+4y=8. The book's directions say find the slope of each line by solving for y.
Click here to see answer by jujuskicol(1)

Question 71343: please help me find the slop of this equation: x+4y=8. The book's directions say find the slope of each line by solving for y.
Click here to see answer by checkley75(3666)

Question 71327: graph the equation 3m+n=4
Click here to see answer by checkley75(3666)

Question 71377: please tell me how to graph -3/5. Do you go over 5 or -5?

Click here to see answer by checkley75(3666)

Question 71416: c + 1/2 = 3c - 1/2
Click here to see answer by elima(1433)

Question 71441: Use the geometric sequence of numbers 1, 2, 4, 8,�to find the following What is r, the ratio between 2 consecutive terms?

Click here to see answer by Earlsdon(6294)

Question 71515: how do you solve x-3y=6
Click here to see answer by checkley75(3666)

Question 71538: I am attempting to study college algebra on my own. There are some questions that do not make sense to me. I want to take my college algebra sometime this spring. please help me get up tp par.
find an equation for the line with Y-intercept 3 that is perpendicular to the line y=2/3 x -4.
I thank you in advance for any assistance in this matter
Click here to see answer by galactus(183)

Question 71540: explain how a graph of can be obtained from the graph of y = x2
Click here to see answer by checkley75(3666)

Question 71522: find the rate of change between the two points. give the units of measure for the rate.
(4,10) and (6,15); x in minutes, and y in miles

Click here to see answer by checkley75(3666)

Question 71539: I am attempting to study college algebra on my own. There are some questions that do not make sense to me. I want to take my college algebra sometime this spring. please help me get up to par.
If P(4,-5) is a point on the graph of the function y=f(x), find the corresponding point on the graph of y=2f(x-6)
I thank you in advance for any assistance in this matter
Click here to see answer by Edwin McCravy(20055)

Question 71559: Another I need help on, I am soooo dumb!

If f(x) = x2 +5, find f(a +h) -f(a)
Possible answers:
2ah + h2 + 10
2ah + h2 + 5
2ah + h2
h2
Pleeeze show me how to solve this so I can apply it to the other questions
Thanks to anyone
Click here to see answer by stanbon(75887)

Question 71554: someone please help
Find the maximum value of y= -x^2 + 6x
Please show me how to do this
Thanx
Click here to see answer by checkley75(3666)

Question 71662: How do you graph a function

Click here to see answer by checkley75(3666)

Question 71653: The question states:
Each set of ordered pairs is for a direct variation. Find each missing value.
I know the answer which is 6 because it says so in the back of the book.
(4,8) and (3,y)
Can anyone explain the steps in the process to me. I have a huge test tomorrow.
Click here to see answer by stanbon(75887)

Question 71722: I have a discussion questio I woul like for some one to explain to me. This is not a graded question or anyhting.
Q: Explain how the graph of can be obtained from the graph of y = x2
this is how the possible answers are presented:
shift the graph of y = x2 left 3 units and down 5 units
. shift the graph of y = x2 left 3 units and up 5 units.
. shift the graph of y = x2 right 3 units and down 5 units
shift the graph of y = x2 right 3 units and up 5 units.
Something to me does not make sense. Seems like something is missing
Thanks to anyone who can help me resolve this.
Click here to see answer by stanbon(75887)

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