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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 591732: how do i find the coordinates of any y-intercept and the coordinates of any x-intercept if all i am given is y = 10? do not graph.
Click here to see answer by solver91311(16868)

Question 591783: How do you graph y=-7x
Click here to see answer by jim_thompson5910(28504)

Question 591776: find the general form of the equation for the line with the given properties.
Slope= -4/9; containnig point (0.5)
Click here to see answer by Alan3354(30983)

Question 591980: I am cramping for finals and have no idea how to do this lesson. We currently use the Saxon Math program, and their lesson does not get through to me, is there someone out there that can help me learn before its too late?
Click here to see answer by solver91311(16868)

Question 592010: x^2=2y+10
3x-y=9
How to do this for simultaneous system
Click here to see answer by Alan3354(30983)

Question 592012: we have a dakota step review. i do not under stand how to know what the slope is or the linear function table to lines on pictures. so please explain how to. thanks!
Click here to see answer by josmiceli(9661)

Question 592175: Hello! I tried using one of your solvers, but it did not work because there was not a subtraction option.
Anyways, I need to solve this system of equations by graphing;
2x - y = 5
x + 7 = 7
I did it by addition/subtraction AND substitution and got ( 3,4 ), but when using the Systems of Equations Graphing Solver, as I had stated, there was no subtraction option, so I could only use addition for my first system, thus making everything wrong. Please help me! I'm doing this for a project that is due TOMORROW and I need prompt help! It is the last part of the project, so I'm not very worried as I have created everything else correctly. Thank you for your time in advance!!
- Cameron
Click here to see answer by scott8148(6628)

Question 592243: Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.
-3x + 6y = -3
-6x + 4y = -10

Click here to see answer by Edwin McCravy(8882)

Question 592482: what is the slope of the line through the following pair of points (3,2) (9,9)
Click here to see answer by mananth(12270)

Question 592585: if f(x)=-x+12, find f(2)and give the ordered pair
Click here to see answer by solver91311(16868)

Question 592587: 3x+4y=5, 2x+y=1...If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this.
This is what I have......
3x+4y=5, 2x+y=1
3x+4y=5
3x-3x+4y=5-3x
4y=5-3x
4y=3x+5
y=3x+5/4
2x+y=1
2x-2x+y=1-2x
y=1-2x
1y=-2x+1/1
y=-2x+1 no solution
What am I doing wrong here?
Click here to see answer by solver91311(16868)

Question 592672: There are two consecutive odd integers. When the difference between the larger integer and three is tripled, the result is twenty-five less than five times the smaller integer. Find the integers.
Click here to see answer by stanbon(57246)

Question 592671: find the linear function that has m=0 and passes through (-21,17)
Click here to see answer by stanbon(57246)

Question 592942: Hello,
I am stuck on how to get further on this problem.
Find an equation of the line containing the given pair of points.
(-5,-9) and (-1,-3)
x,m= y2-y1 over
x2-x1
I would really like to see step by step
Click here to see answer by jim_thompson5910(28504)

Question 592978: consider the line y= -9x+7
Find the equation of the line that is parallel to this line and passes through the point (-3,-5)
Find the equation of the line that is perpendicular to this line and passes
through the point (-3,-5)
Click here to see answer by mananth(12270)

Question 593048: "what is the solution to this system of linear equations"
y=x-10
y=7x-46
Click here to see answer by solver91311(16868)

Question 593140: if the line through the points (6,r) and (-2,1) is perpendicular to the line y=-2-3, what is the value of r?
Click here to see answer by richwmiller(9135)

Question 593208: 1/2z=10
Click here to see answer by rfer(12647)

Question 593270: Write an equation of the direct variation that includes the point (9,12)

Click here to see answer by jim_thompson5910(28504)

Question 593320: Let g(x)=4x-6; find g(1/3) and simplify
Click here to see answer by jim_thompson5910(28504)

Question 593444: Find the slope of the line containing the given pair of points. if the line is undefined, state so. please be sure to show all of your work. (9,-6) and (5,6)
Click here to see answer by mananth(12270)

Question 593474: Goldenwood Street drops 12 feet over a horizontal distance of 900 feet. What is the slope of the street? Round your answer to two decimal places
Click here to see answer by ankor@dixie-net.com(15638)

Question 593481: Find the x- and y-intercepts for the equation. Please show all of your work. Then graph the equation and submit your graph through the dropbox. -x+2y=4
Click here to see answer by mananth(12270)

Question 593660: I need to find the slope of (-6,2) It has to be an integer or a simple fraction. I want to understand how we get the slope
Click here to see answer by richard1234(5390)

Question 593674: x/2 - y + 6 = 0 in slope intercept form
A. -x/2-6
B. x/2+6
C. x/2-6
Click here to see answer by Alan3354(30983)

Question 593702: how do you solve... a(b-c)= a/b, solve for c?
Click here to see answer by Alan3354(30983)

Question 593701: how do you solve... a(b-c)= a/b, solve for c?
Click here to see answer by Alan3354(30983)

Question 593838: (-7, -5) and (-3, 1)?

Click here to see answer by Alan3354(30983)

Question 593844: Which is the best description of the graph of -7x + 2y = 42?

Click here to see answer by unlockmath(1599)

Question 593841: Which of the ordered pairs is a solution of the equation y = 7x - 13?

Click here to see answer by unlockmath(1599)

Question 593840: Which ordered pair is a solution to the following system of equation?
y = 3x + 4
-4x + y = 2
Click here to see answer by rfer(12647)

Question 593835: Find the equation of line with a slope -1 that is the tangent to the curve y=1/x-1
WITHOUT USING CALCULUS TO FIND THE DERIVATIVE.
I am only in an advanced functions course and have not learned how to take the derivative of a function yet.
I think the solution should have two equations since the original function has two curves and both have vertical asymptotes with the y-axis and horizontal asymptotes as x=-1.
I greatly appreciate any help.
Click here to see answer by AnlytcPhil(1276)

Question 593817: what is the equation of the line that passes through points (-4,2) and (4,0)?

Click here to see answer by jim_thompson5910(28504)

Question 593882: The slope of a) y=4 b) x=6
Click here to see answer by jim_thompson5910(28504)

Question 593978: A small farm has 70 acres of space to plant. The farmer wants to grow corn and green beans. It costs $60 per acre to grow the corn and $30 per acre to grow the green beans. The farmer has $1800 to use for planting the vegetables. It takes the farmer 3 days to plant each acre of corn and 4 days to plant each acre of green beans. There are 120 days available to plant the vegetables. When the farmer sells the vegetables, he can expect to make a profit of $180 per acre for the corn and $100 per acre for the green beans. How many acres should the farmer allow for each vegetable in order to maximize profit?
What are the equations I should use to solve this problem?
Click here to see answer by ankor@dixie-net.com(15638)

Question 594104: 7x + y -23 = 0
What is the slope ?
Click here to see answer by jim_thompson5910(28504)

Question 594137: find the x intercept and the y intercept for 2x+3y=6
Click here to see answer by jim_thompson5910(28504)

Question 594193: Write an equation in slope intercept form
slope=3
y intercept 5
Click here to see answer by jim_thompson5910(28504)

Question 594189: How to solve equations with two variables on both sides?
E.g.
2n = x
Q: How to make "n" by it's self
Would x be 1/2x
or x/2
or 2/x
Click here to see answer by jim_thompson5910(28504)

Question 594284: y = - 4x - 3 Find the slope of the line
Click here to see answer by richard1234(5390)

Question 594281: find an equation of the line that contains the point (2,-3) and has the same slope as the line 3x-y+4=0

Click here to see answer by mamiya(56)

Question 594498: how do u find the equation of a line when given the y intercept and a point? grade 9 level eg: given y intercept as 3 and point as (-6,7)
Click here to see answer by jim_thompson5910(28504)

Question 594524: how do i do 6x-2y=30 ?
Click here to see answer by Alan3354(30983)

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