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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 654426: Write the equation in slope-intercept form. What are the slope and y-intercept? �9x + 10y = �9 (1 point)
Click here to see answer by lynnlo(4176)

Question 654493: Find the value of k so that the line containing the points (-4,k) and (8,-4) is perpendicular to the line y=2/5x+4. If you could explain how I should start this problem. I thought if it is perpendicular I would use the opposite reciprocol, but considering I have an unknown variable(k) not quite sure what to do with it. Thanks for your time!
Click here to see answer by ankor@dixie-net.com(22740)

Question 654516: is this a right triangle (5,-9),(-3,-6),(-3,-9)
Click here to see answer by solver91311(24713)

Question 654585: -7x � y = -30; 4x + y = 21 solve using the elimination method
Click here to see answer by checkley79(3341)

Question 654629: What is the slop of a line that passes through (7, -2) and (-1, -5)
Click here to see answer by jim_thompson5910(35256)

Question 654741: A line cotains e points (8,y) and (11,7) and has a slope of 6. Find the value of y
Click here to see answer by reviewermath(1029)

Question 654301: Find the slope intercept form and standform. Contains point (0,4) and is parallel to y=2x+3y

Click here to see answer by ankor@dixie-net.com(22740)

Question 654855: how do I graph (0,4) thanks!
Click here to see answer by josmiceli(19441)

Question 654902: Write the equation of a line that passes through the point (10,3) and is perpendicular to a line containing the points (-5,-2) and (-3,8) in slope intercept form.
Click here to see answer by lwsshak3(11628)

Question 655006: What is the point that is common to the graphs of both functions? y=1/2x+3 and y=-x-3

Click here to see answer by MathLover1(20849)

Question 655109: What are the vertical asymptotes of x^2+9x+20/x^2+2x-15 ?
Click here to see answer by lwsshak3(11628)

Question 655078: I tried the problem:
5(x-1/10)-6=-11x

5x-.5-6=-11x
5x-5.5=-11x
6x=-5.5
???
My answer choices are
x=11
x=3
x=1/2
Could you please explain this problem?
Your help is very much appreciated!
Click here to see answer by checkley79(3341)

Question 655269: 1) calculate the gradient of the line joining the following pairs of points :
(3,1) (5,4)
2) calculate the gradient and y-intercept of the given straight lines.
3x-2y=8
thanks to you a lot.
Click here to see answer by nerdybill(7384)

Question 655274: Can someone please help me how to write an equation for each line??
1) y-intercept of -2.1,x-intercept of 3.5
2)through(1.2,5.1),x-intercept of 3.7
please help me! I was sick, so i missed the lesson
Click here to see answer by ewatrrr(24785)

Question 655243: The weekly salary of an employee is 250 plus a 6% commission on the employees total sales. find the weekly pay for a week in which sales are 5000
Click here to see answer by checkley79(3341)

Question 655296: What is the solution to 5x+15=2x
Click here to see answer by rfer(16322)

Question 655312: What is the equation of a line that is perpendicular to y=5 and passed through point (-2,2)?
I thought y=5 would be a horizontal line with no slope so I figured the point was (0,5) and I used that with (-2,2) to find the slope of this other line and ended up with 3/2. So, would the perpendicular line be y=3/2x+5? It doesn't seem right. ):
Click here to see answer by ewatrrr(24785)

Question 655317: aman and ravi are running around a circular path.aman takes 18 minutes to go ground the path once while ravi takes 12 minutes for the same.Suppose they start at the same point and at the same time and go in the same direction.After how many minutes will they meet at the starting point?
Click here to see answer by Edwin McCravy(20055)

Question 655333: x=3 write an equation that is perpendicular to (2,5)
Click here to see answer by nerdybill(7384)

Question 655399: An olympic runner completes a 5000- meter race in 13 minutes and 20 seconds. What is the average speed of the runner?
Click here to see answer by lwsshak3(11628)

Question 655399: An olympic runner completes a 5000- meter race in 13 minutes and 20 seconds. What is the average speed of the runner?
Click here to see answer by stanbon(75887)

Question 655358: x+y=
Click here to see answer by MathLover1(20849)

Question 655519: The promblem says given -2x+y=-4 find the x and y intercept then graph the solution?
I know how to figure out the x and y intercept but im not understanding what is it they want me to graph ( do I need to find points)

Click here to see answer by jim_thompson5910(35256)

Question 655541: Use the formula d=5t^2 + V0t(It V sub 0) to find the time it takes an object dropped from a height of 125 meters to hit the ground.
I answered it like this:
125 m = 5t^2 - I didn't include V0t since it is equal to 0
125 m/5 = 5t^2/5
25 m = t^2 - I used square root
t = 5.

Click here to see answer by Alan3354(69443)

Question 655622: What is the linear equation containing the point (-4, -1) and perpendicular to the line through (1, 4) and (3, 5) in general form?
Click here to see answer by MathDazed(34)

Question 655650: (6,7) 8x+y=4
I saw that the answer is 1/8x+25/4 but I have absolutely NO idea how they got 25/4, can you PLEASE explain in detail!
Thank you!
Click here to see answer by MathDazed(34)

Question 655696: what is the slope for f(x)=4x+3
Click here to see answer by MathDazed(34)

Question 655704: What is an equation of the line in slope-intercept form?
m = 2/7 and the y-intercept is (0, �12) (1 point)
Click here to see answer by MathDazed(34)

Question 655776: Use the elmination method to solve this system of equations
a+6b=11
a+4b=5
Click here to see answer by Alan3354(69443)

Question 655852: How can I graph y= -x+5
Click here to see answer by reviewermath(1029)

Question 655870: Determine the value of r so the line that passes throught each pair of points has the given slope.
Problem: (10,r),(3,4),m = -2/7
I have no clue what it is asking or anything about it.
Click here to see answer by stanbon(75887)

Question 655918: Write an equation of the line that passes through two points (-5,-3) (-5,-3)
Click here to see answer by stanbon(75887)

Question 655918: Write an equation of the line that passes through two points (-5,-3) (-5,-3)
Click here to see answer by Alan3354(69443)

Question 655992: find the equation of x + 8 = 2.1
Click here to see answer by Alan3354(69443)

Question 656013: How do you solve this?
A company sells desks for $350 each. Each desk costs them $127 to make, and they have fixed expenses of $12,000. If they make and sell 200 desks, how much is their profit?
Click here to see answer by rfer(16322)

Question 656140: solving by elimination
5x-7y=-49
3x+9y=-3
Click here to see answer by MathLover1(20849)

Question 656171: Given the linear function, 3x-2y=8. Find the slope of the graph of this function.
Click here to see answer by lynnlo(4176)

Question 656293: Is (-2,3) a solution of 2y+x=4 ? Show the work , step by step .
Click here to see answer by shweta(56)

Question 656303: Find the value of K so that the graph of 21y-kx=4 and the line containing the points (5,-8) and (2,4) are parallel

Click here to see answer by shweta(56)

Question 656311: given A (3,-2) and B (-4,-1) find slope intercept of the line perpendicular to AB through A
Click here to see answer by chandrak(4)

Question 656334: Can you guys please help me on translations im in 8th grade.
Click here to see answer by solver91311(24713)

Question 656338: Determine the slop of the points that passes through eat pair or points.
(5.5,-5.5) and (11,7)
Click here to see answer by solver91311(24713)

Question 656341: Write an equation in slope intercept form that satisfies each condition.
Slope=2 x-intercept= 3/2
Click here to see answer by MathLover1(20849)

Question 656417: Find an equation of the line having the given slope and containing the given points
m=-8(5,6)

Click here to see answer by rfer(16322)

Question 656643: Find the value of x so that the line containing (4,8) and (2,-1) is perpendicular to the line containing (x,2) and (-4,5). Graph the lines.
Click here to see answer by solver91311(24713)

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