Tutors Answer Your Questions about Graphs (FREE)
Question 994548: For the equation 9 x ^3  9 y ^2 = 6 answer the following questions.
Is the equation symmetric with respect to the yaxis? ( yes or no)
Is the equation symmetric with respect to the xaxis? ( yes or no)
Is the equation symmetric with respect to the origin? ( yes or no)
I have substitute both axis and the origin with the corresponding transformation of x and y. However, I couldn't find the right answer and I would like to know what I did wrong.
For example,
x axis: 9x^39(y)^2=6
9x^39y^2=6 < same equation as original therefore Yes
Y axis: 9(x)^39y^2=6
9x^39y^2=6 < not the same equation as original therefore No
Origin: 9(x)^39(y)^2=6
9x^39y^2=6 < not the same equation as original therefore No
Answer by solver91311(20879) (Show Source):
Question 994416: 3x + 23 = 23
Answer by Alan3354(47455) (Show Source):
Question 994433: The sum of two numbers is 48, and one number is twice the other. Find the numbers
Answer by Cromlix(3061) (Show Source):
You can put this solution on YOUR website! Hi there,
The sum of two numbers is 48,
and one number is twice the other
x + 2x = 48
3x = 48
x = 48/3
x = 16
First number = 16
Second number = 32
Hope this helps :)
Question 994381: system of linear equations using elimination for x6y=11 and 5x6y=19
Answer by Alan3354(47455) (Show Source):
Question 994374: system of linear equations using substitution y=5x11, y=3x+5
Answer by Alan3354(47455) (Show Source):
Question 994298: Determine whether the function is an odd or even function:
Answer by ikleyn(988) (Show Source):
Question 994299: Determine whether the function is an odd or even function:
Answer by ikleyn(988) (Show Source):
Question 994306: If 4 < a ≤ 8 and 1/4 < b < 1/2, then what are the possible values of ab?
A. 1 ≤ ab ≤ 4
B. None of these
C. 1 ≤ ab < 4
D. 1 < ab ≤ 4
E. 1 < ab < 4
Answer by ikleyn(988) (Show Source):
Question 994086: Write equations for the vertical and horizontal lines passing through the point (1,5)
Answer by stanbon(69061) (Show Source):
You can put this solution on YOUR website! Write equations for the vertical and horizontal lines passing through the point (1,5)

Answers::
Vertical:: x = 1
Horizontal:: y = 5

Cheers,
Stan H.

Question 994085: How do you do h(2) is greater than or equal to 10?
Answer by rothauserc(2272) (Show Source):
Question 994024: Find the equation of the line that contains the given point and has the given slope. Express the equation in the form Ax + By = C, where A, B and C are integers.
(5, 6), m = 5/6
____=11
Answer by lwsshak3(11500) (Show Source):
You can put this solution on YOUR website! Find the equation of the line that contains the given point and has the given slope. Express the equation in the form Ax + By = C, where A, B and C are integers.
(5, 6), m = 5/6
____=11
m=∆y/∆x=(y6)/(x5)=5/6
6y36=5x25
5x6y=9 (equation of the line)
Question 994036: Which equation represent the line with slope 2 that passes through the point (4,1)
Y= 2x9
Y= 2x7
Y= 2x+2
Y= 2x+7
Found 2 solutions by vleith, josgarithmetic: Answer by vleith(2950) (Show Source): Answer by josgarithmetic(13975) (Show Source):
You can put this solution on YOUR website! Two ways to solve.
Plugin the coordinate values and see which equation is true.
OR
Plug slope and given point into pointslope formula and simplify into general form.
Question 993987: Find the slope if possible of the line passing through the points, (1,2) and (1,1) and describe the line.
Answer by lwsshak3(11500) (Show Source):
You can put this solution on YOUR website! Find the slope if possible of the line passing through the points, (1,2) and (1,1) and describe the line.
slope of given line is undefined. It can be described as a vertical line passing thru x=1
Question 993287: For what values of "a" is the distance between P(a, 3) and Q(6, 2a) greater than 29?
(Enter your answer using interval notation.)
Answer by anand429(129) (Show Source):
Question 993988: The equation, in general form, of the line that passes through the point (3,5) and is parallel to the line 6x9y+2=0 is Ax+By+C=0 where A,B and C are what?
Found 2 solutions by anand429, josgarithmetic: Answer by anand429(129) (Show Source): Answer by josgarithmetic(13975) (Show Source):
Question 993873: whats the slope of (5,8) (5,8)
Answer by farohw(153) (Show Source):
Question 993863: what is y=3/4x2 when you graph it
Answer by Alan3354(47455) (Show Source):
Question 993828: how do you transform y=3x+18 into a standard form
Found 2 solutions by MathTherapy, josgarithmetic: Answer by MathTherapy(4047) (Show Source):
You can put this solution on YOUR website!
how do you transform y=3x+18 into a standard form
3x + 18 = y  Reversing sides
3x  y + 18 = 0  Subtracting y to get variables on lefthand side
 Subtracting 18 to get the constant on the righthand side
DONE!!
Answer by josgarithmetic(13975) (Show Source):
Question 993823: how do you transform y=3x+18 into a slope intercept form
Answer by josgarithmetic(13975) (Show Source):
Question 993714: plase help me solve this. Rearrange this equation into that form that can be plotted as a straight line graph y=10ex. the x is a power.Thank you.
Answer by Theo(5548) (Show Source):
You can put this solution on YOUR website! i believe this reference answers your question.
http://slc.umd.umich.edu/slconline/TRANSF/
generally speaking, you are transforming y = 10 * e^x into the equation ln(y) = x + ln(10)
that's done in the following manner:
start with y = 10 * e^x)
take natural log of both sides to get:
ln(y) = ln(10 * e^x)
this becomes:
ln(y) = ln(10) + x * ln(e) which becomes:
ln(y) = ln(10) + x
rearrange the terms to get:
ln(y) = x + ln(10) which is in the form of a linear equation.
i don't pretend to understand what they doing or why they're doing it, but the reference i found on the web should be helpful.
Question 993775: If there is an improper fraction such as 17 over 3 how would u change it into a mixed fraction to graph it?
Answer by stanbon(69061) (Show Source):
You can put this solution on YOUR website! If there is an improper fraction such as 17 over 3 how would u change it into a mixed number to graph it?

Divide 17 by 3 to get:
Ans: (5 2/3)

Cheers,
Stan H.

Question 993679: What is the slope of the line through the points (2,3) and (6,5)?
Answer by fractalier(2141) (Show Source):
Question 993563: If I have (x+3)^2+5 how do I make a vertical compression that restricts to 20% of the original? I'm thinking a would need to equal 20, but I'm not sure.
Answer by solver91311(20879) (Show Source):
You can put this solution on YOUR website!
20% is 1/5. For vertical compression, you need a "less than 1" lead coefficient.
John
My calculator said it, I believe it, that settles it
Question 993532: How do you solve 4x+5y=25 and 8x5y=35 when using substitution
Answer by ikleyn(988) (Show Source):
You can put this solution on YOUR website! .
How do you solve 4x+5y=25 and 8x5y=35 when using substitution.

.
You can express 4x from the first equation, 4x = 255y, and then substitute it into the second equation. You will get
2*(255y)  5y = 35.
Simplify and solve:
50  10y  5y = 35,
15y = 30  35,
15y = 15,
y = 1.
Now substitute the found value of y=1 into the first equation to find x. You will get
4x + 5*1 = 25,
4x = 20,
x = 5.
Answer. x = 5, y = 1.
Question 993524: m:3/2,(4,6)
Answer by josgarithmetic(13975) (Show Source):
You can put this solution on YOUR website! Slope and included point of a line?
Learn to understand and use PointSlope formula.
Line with slope m and point on the line, (h,k)
has an equation .
Question 993522: How to find the slope thru a pair of points
Answer by sashwatam(1) (Show Source):
You can put this solution on YOUR website! Imagine one point is (a,b), and another point is (c,d) on a graph (these letters represent x and y values).
Slope: rise/run= (db) divided by (ca)
Question 993481: Given the function
y = ( x+3 ) ( x^2+3 x−3 )
find the coordinates of the points of intersection with the xaxis and yaxis.
Please enter your answer as a set of coordinate pairs, where a single coordinate pair (a, b)
constants should all be given exactly, using the sqrt function and fractions as necessary
THANK YOU
Answer by MathLover1(11324) (Show Source):
You can put this solution on YOUR website!
intersection with the xaxis occurs where
and
intersection with the yaxis occurs where
so set and find intersection with the xaxis
...will be true for or , or both
if =>
...use quadratic formula
solutions: exact solutions
or
approximate solutions:
or
so, ordered pairs are:
(,)
(,)
(,)
or
(,)
(,)
(,)
now find yintercept:
the yaxis occurs where , so set
ordered pair is:
(,)
see it on the graph:
Question 993482: Given the function
y = ( x  4 ) ( x^2 + 3x + 2 )
find the coordinates of the two stationary points and the point of inflection.
Note. A stationary point is a critical point at which the derivative is 0.
Please enter your answer as a list of coordinate pairs, where a single coordinate pair (a, b)
THANK YOU
Answer by solver91311(20879) (Show Source):
Question 993404: The perimeter of a rectangle is 32in. If the length of the rectangle is 1 more than twice the width. Find the dimensions of the rectangle .
Answer by Cromlix(3061) (Show Source):
You can put this solution on YOUR website! Hi there,
Make the width = 'x'
Length = 1 + 2x
Perimeter = 2 x Width + 2 x Length
32 = 2(x) + 2(1 + 2x)
32 = 2x + 2 + 4x
Collect like terms.
2x + 4x = 32  2
6x = 30
x = 5
Width = 5 in
Length = 11 in
Hope this helps :)
Question 993369: NEEDING HELP WITH THIS QUESTION PLEASE.
f(x) = 3x2 − 12x + 8
INCREASING=?
DECREASING=?
HOW DO I FIND/WHAT FORMULA DO I USE TO FIND THIS?
THANK YOU!
Answer by Theo(5548) (Show Source):
Question 993358: I know how to find increasing and decreasing but I am having trouble finding this one:
f(x) = −2(x + 1)2 + 4
Increasing:?
Decreasing:?
Please explain your answer so that I understand. Thank you!
Found 2 solutions by stanbon, Fombitz: Answer by stanbon(69061) (Show Source):
You can put this solution on YOUR website! f(x) = −2(x + 1)^2 + 4
f(x) = 2(x^2+2x+1) + 4
f(x) = 2x^24x+2


Take the derivative to get:
f'(x) = 4x4

Increasing:?
Solve: 4x4 > 0
4x > 4
x < 1
Increasing on (oo,1)

Decreasing:?
Solve: 4x4 < 0
4x < 4
x > 1
Decreasing on (1,+oo)
===========
Cheers,
Stan H.
Answer by Fombitz(25151) (Show Source):
Question 993204: A line has a slope of  3/4. What is the slope of the line parallel to it? What is the line perpendicular to it?
Answer by stanbon(69061) (Show Source):
You can put this solution on YOUR website! A line has a slope of  3/4.
What is the slope of the line parallel to it?
Ans: 3/4

What is the slope of the line perpendicular to it?
Ans: 4/3

Cheers,
Stan H.
=========
Question 993150: I am doing homework and part of it deals with graphs and I just don't understand how to come up with the solution. The problem is 2x+y=6
Thank you! :)
Found 2 solutions by ikleyn, Alan3354: Answer by ikleyn(988) (Show Source): Answer by Alan3354(47455) (Show Source):
You can put this solution on YOUR website! I am doing homework and part of it deals with graphs and I just don't understand how to come up with the solution. The problem is 2x+y=6
===========================
There is no unique solution to the equation.

If you mean how to graph it:
It's a straight line so you need 2 points.
You can use the 2 intercepts.
At the yintercept x = 0 > y = 6 > point (0,6)
At the xintercept y = 0 > x = 3 > point (3,0)

Plot the 2 points, draw a line thru them.
Question 993132: How would I graph a slope 1/3 and (4,1)
Answer by Fombitz(25151) (Show Source):
You can put this solution on YOUR website! First plot the point (4,1).
Slope is change in y over change in x.
So in this case a change in x of 3 units gives you a change in y of 1 unit.
So another point on the line would be,
(4,1)+(3,1)=(1,0)
Plot that point.
Then draw the line connecting the points.
.
.
.
.
Question 993060: x + y = 10 is this a function or not
Answer by vleith(2950) (Show Source):
Question 992932: How could I use the pointslope form to find the equation of the line? The answer has to be in slopeintercept form.
One point on the line is (−2, −6). The slope is 2. Thank you!
Answer by josgarithmetic(13975) (Show Source):
Question 992858: all reals greater than or equal to 3 and less than 6 what is the interval representation
Answer by MathLover1(11324) (Show Source):
Question 992304: Find the point of intersection of the two lines to 2x+y=5 and y=x1
Answer by ikleyn(988) (Show Source):
You can put this solution on YOUR website! .
You need to solve this system of two equations with two unknowns:
.
Substitute y from the second equation to the first one. You will get an equation for the single unknown x only.
Then solve it.
Then substitute the found value of x into either equation of the original system to find y.
Is it clear?
Good luck!
Question 992378: Suppose admission to the fair is $3.
a) Write an equation slopeintercept form for the total cost of admission and any number of tickets at the rate of 6 tickets for $5.
b) Write an equation in slopeintercept form for the total cost of admission and any number of tickets at the rate of 12 tickets for $8.
Answer by solver91311(20879) (Show Source):
Question 992349: Graph f(x)=x^2 and show f(1), f(2), f(3)
Answer by stanbon(69061) (Show Source):
You can put this solution on YOUR website! Graph f(x)=x^2 and show f(1), f(2), f(3)


f(1) = 1^2 = 1
f(2) = 2^2 = 4
f(3) = 3^2 = 9

Cheers,
Stan H.


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