Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 45318: find the equation of the line that passes through (-2,3) and (4,-1).
the formula I believe is y-y1 = y2-y1/x2-x1 (x-x1)
I'm not quite sure as to how to set that up. do I solve as I go?

Click here to see answer by tutorcecilia(2152)

Question 45376: the ordered pair solution of y = -1/3x + 4/3
which is (-2,2) but I'm having trouble remembering how to solve.
Click here to see answer by fractalier(2101)

Question 45377: use the intercept form to find the equation on the line that contains the point
(-8,2) and has slope 3/4
Click here to see answer by fractalier(2101)

Question 45267: Find the equation of the line with x-intercept 2 and y- intercept 3.
Click here to see answer by rapaljer(4667)

Question 45447: x-5y=-3
4x-3y=5
Click here to see answer by tutorcecilia(2152)

Question 45326: graph the following inequalities.
4x+y>4 (there is an underscore on the >).

Click here to see answer by tutorcecilia(2152)

Question 45450: Please Help How do you enter a formula into the computer using exel (graphing) so the computer will understand it? Regarding algebra thank you
Click here to see answer by adamchapman(301)

Question 45683: solve by graphing

3x-2y=4
-6x+4y=7

Click here to see answer by tutorcecilia(2152)

Question 45707: solve the equation by completing the square.
x(square) + x - 3/4= 0
Click here to see answer by venugopalramana(3286)

Question 45765: find the equation for the line with y-intercept 3 that is perpendicular to the line y=2/3X-4.
i know that the slope of the line must be the neg reciprocal of the orginal one.
but after that it gets fuzzy
Click here to see answer by stanbon(57216)

Question 45768: determine the point a(x,y), b(0,3), c(1,0), d(7,2) will be the vertices of a parralellogram.
by plotting it on some graph paper i came up with a(6,5). but not sure i am right.
Click here to see answer by Fermat(127)

Question 45799: An employee who produces x units per hour earns an hourly wage of y = 0.55x + 12 (in dollars). Find the hourly wage for an employee who produces 20 units per hour.
Click here to see answer by checkley71(8403)

Question 45802: Graph by first solving for y.
x – 3y = 9

Click here to see answer by special629(2)

Question 45685: solve the system

4x+y=-5
4x-z=3
y+z=-8

Click here to see answer by venugopalramana(3286)

Question 45825: solve by graphing
x-y=2
x+y=8
would it be 2x=10?
Click here to see answer by Nate(3500)

Question 46043: What is the equation of the line that passes through(0-4) with a slope of 8?
Click here to see answer by venugopalramana(3286)

Question 46044: What is the equation a the line with a slope of 6 and y-intercept (0,-9)
Click here to see answer by Nate(3500)

Question 46188: How do I find the equation to graph this problem x+y=4?
Click here to see answer by checkley71(8403)

Question 46219:
I know 1992 had the fewest, but I got part B wrong.
Click here to see answer by mszlmb(115)

Question 46229: What would the graph of this function look like:
f(x)=(4/3)^x
Click here to see answer by Nate(3500)

Question 46305: what is the y-intercept of the graph of this equation? -4y-32=-3x
Click here to see answer by tutorcecilia(2152)

Question 46423: Graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph.
4y = 7
Click here to see answer by tutorcecilia(2152)

Question 46422: Graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph.
-x - y = -2

Click here to see answer by tutorcecilia(2152)

Question 46544: The points (1,5), (4,5), and (1,0) represent three corners of a rectangle; find the coordinates of the fourth point.
Click here to see answer by aubrie_meggan(1)

Question 46569: beginning algebra book
I am having a problem trying to solve this equation I have to put it on a graph
I don't know how to graph this on please help.

y>3
Click here to see answer by tutorcecilia(2152)

Question 46613: This is not from a book, it's from my teacher.
I've been trying to get this right, but I know it's wrong.
My teacher wants this:
On a four quadrent grid, the following formulas:
y= mx+b
(y2-y1)
m= --------
(x2-x1)
A point consists of (x,y)
Two points are written like (x1, y1), (x2, y2)
And equations of the lines for those points.
Does this make any sense to anyone?
Thank you in advance for any help you can offer.
Holly
Click here to see answer by adamchapman(301)

Question 46768: What is the standard form of an equation that passes through (3,0) and (6,-8)?
Click here to see answer by adamchapman(301)

Question 46766: What is the y-intercept form of the equation of the line that passes through the points (2,3) and (-1,4)?
Click here to see answer by adamchapman(301)

Question 46767: What is the standard form of an equation of the line that passes through the point (-1,5) and has a slope of 1/2?
Click here to see answer by Nate(3500)

Question 46747: Find an equation in slope-intercept form passing through the points (-6.2,18.1) and (-3.4,18.1).
Click here to see answer by adamchapman(301)

Question 46765: What is the equation of the line that is parelle to y=3x+1 and passes through (2,6).
Click here to see answer by Nate(3500)

Question 46749: Graph the following equations; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph.
3x = -2
Click here to see answer by tutorcecilia(2152)

Question 46914: For the function defined by f(x)=5x-4, find a formula for f -1(x).
Note: the -1 is raised or is in exponent.
Click here to see answer by stanbon(57216)

Question 47054: Determine the equation of each line. write the answer in standard form using only integers as the coefficients. The line through (-2,4)that is perpendicular to the x-axis
Click here to see answer by Nate(3500)

Question 47138: Determine which of the ordered pairs listed below satisfies the given system?
x + 2y = 3
2x + y = 6
I know the answer is (3,0) I need to know the steps in solving the problem.
Click here to see answer by checkley71(8403)

Question 47193: - Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and
points of intersection
y = 2x + 3 and y = -x - 4

Click here to see answer by tutorcecilia(2152)

Question 47468: Find the slope-intercept form of the line through the given points.
(-7,-1) and (-3,4)
Click here to see answer by linda :](3)

Question 47505: We know that perimeter of the circle C = 2pr and its area S = pr^2. Which of these two equations is linear and which is not? Why?

Click here to see answer by stanbon(57216)

Question 47656: - Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
0.2x + 0.4y = 1.7 and 8.3x - 6.3y = -4.3
Click here to see answer by stanbon(57216)

Question 47657: - Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
x/3 - y/5 = 4 and 3x/4 + 2y/3 = 6
Click here to see answer by Nate(3500)

Question 47729: What is the slope of the equation 2x-y=-2 and 6x+5y=-3?
Click here to see answer by venugopalramana(3286)

Question 47728: What is the slope of the equation 2x-y=-2 and 6x+5y=-3?
Click here to see answer by venugopalramana(3286)

Question 47655: - Determine how many solutions exist
- Use either elimination or substitution to find the solutions (if any)
- Graph the two lines, labeling the x-intercepts, y-intercepts, and points of intersection
4x = 8 and 5y = 15

Click here to see answer by checkley71(8403)

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