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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 405445: Trying to figure out the slope of the line determined by the equation 2x=y. I came up with m = -2, but don't feel confident in my answer. I used the formula: Y2-Y1/X2-X1
Click here to see answer by richard1234(7193)

Question 405540: can you help me

Click here to see answer by Alan3354(69443)

Question 405540: can you help me

Click here to see answer by stanbon(75887)

Question 405575: Find the equation of the line.
Thru (4,2) ; m= -2/3
Thru (9,2) ; perpendicular to 3x+2y=31
Click here to see answer by ewatrrr(24785)

Question 405581: use the intercepts to graph the equation.
5x+3y=15
Click here to see answer by ewatrrr(24785)

Question 405704: how do you graph y=2x+4
Click here to see answer by jim_thompson5910(35256)

Question 405704: how do you graph y=2x+4
Click here to see answer by Alan3354(69443)

Question 405700: xwhat are the x and y- intercept of this equation:y=-7x
Click here to see answer by Alan3354(69443)

Question 405791: explain how you can find the price of y identical shirts if each shirt costs $19.00

Click here to see answer by richard1234(7193)

Question 405801: Solve by substitution:6x-y=18 8x+y=24
Click here to see answer by MathLover1(20849)

Question 405800: Solve by substitution:2x-3y=-7 3x+y=-5
Click here to see answer by MathLover1(20849)

Question 405837: Solve the equation: 6x-8=10x+16

Click here to see answer by rfer(16322)

Question 405862: how do u solve 6t+7/4t-1=3t+8/2t-4
Click here to see answer by rfer(16322)

Question 405796: Solve by substitution:3y+4x=5 x+y=1
Click here to see answer by rfer(16322)

Question 406108: Choose the graph that corresponds to the equation x − 5y = 10.

Click here to see answer by ewatrrr(24785)

Question 406134: write an equation of a line, in slope intercept form, that has a point on the line of (3,-4) and a slope of 3
Click here to see answer by ewatrrr(24785)

Question 406255: Find an equation for the line with the given properties.
perpendicular to the line y=1/9x+2; containing the point (3,-3)
Click here to see answer by ewatrrr(24785)

Question 406487: how to do "what is the slope of y= -x + 3?
Click here to see answer by mananth(16946)

Question 406723: If one line has a slope of −3 and another has a slope of 2, which line is steeper? Why?
Click here to see answer by ewatrrr(24785)

Question 406769: A river drops 4 feet over a horizontal distance of 97 feet.
Find the slope of this part of the river.
Round your answer to two decimal places.

Click here to see answer by rfer(16322)

Question 406720: In 1993 a farmer owned 250 acres. In 2004 he owned 312 acres. If this growth is linear, how many acres should he own in 2012. Write a linear equation to model his growth.
Click here to see answer by ewatrrr(24785)

Question 406902: 7x+8=1
Click here to see answer by rfer(16322)

Question 407240: What is the slope-intercept form of the line that has a slope of 3 and contains the point (2, 5).
Click here to see answer by unit(6)

Question 407101: Please help me solve this equation: 1/2x+3/4y=6, solve for y
Click here to see answer by ankor@dixie-net.com(22740)

Question 406764: graph x<-4y-8
Click here to see answer by ewatrrr(24785)

Question 407282: this is a systems of linear equations in two variables.
How would i go about solving for x and y with the equations ax+y=b and bx-y=a?
Click here to see answer by graphmatics(170)

Question 406929: What is the equation of the line perpindicular to y=-1/5x+2 that passes through point (10,7)?
Click here to see answer by ewatrrr(24785)

Question 407050: a line passes through the points (0,3) and (2,-9). what is the equation of this line in alope-intercept form?
Click here to see answer by ewatrrr(24785)

Question 407356: How do you determine wheter each order pair is a solution of the given equation? y=3x (2,3),(3,2),(-4,-12).
Click here to see answer by jim_thompson5910(35256)

Question 407398: y=2x-5 find y coordinates of (-2), (4) and (-1)
Click here to see answer by jim_thompson5910(35256)

Question 407405: HELP! :(

Find the slope of a line that passes through the points (-2,1) and (3, -4).
Click here to see answer by jim_thompson5910(35256)

Question 407421: Find the y intercept for 2x+y=6
Click here to see answer by jim_thompson5910(35256)

Question 407060: solve the system of equations graphically: x=2,y=4
Click here to see answer by ewatrrr(24785)

Question 407445: Find the x and y intercept for the equation 9y-3x=-6
Click here to see answer by jim_thompson5910(35256)

Question 407733: solve and check the linear equation 9x-(8x-1)=2
Click here to see answer by robertb(5830)

Question 407802: 2x-3y=-11
5x+2y=1
Click here to see answer by Alan3354(69443)

Question 407846: /x+7/+7=6
Click here to see answer by Alan3354(69443)

Question 407851: 3x-7>=8
Click here to see answer by Alan3354(69443)

Question 407845: 3x-7>=8
Click here to see answer by jim_thompson5910(35256)

Question 407895: Suppose the sales of a particular brand of appliance satisfy the linear model y=100x+2300, where y represents the number of sales in a year x with x = 0 corresponding to 1982, with x = 1 corresponding to 1983 etc. find the number of sales in 1999.
Click here to see answer by graphmatics(170)

Question 408003: ok if m=6/7,(5,-1) and we look at it with the equation y--y1=m(x-x1) so it would be y-(-1)=(6/7)(x-5) that then goes on to y+1=6/7x-30/7 i understand all of this just fine what confuses me is on the last step it says i must subtract -1 from both sides so how does the answer come out to be 37/7? final equation shows y=6/7x- 37/7 i dont get how subtracting -1 from both sides produces 37/7 from 30/7 please explain

Click here to see answer by rfer(16322)

Question 407978: Find the equation of the straight line which passes through points P(2,-3) and Q(-4,2)
Click here to see answer by rfer(16322)

Question 407970: I have tried to solve these types of problems and am having no luck at figuring out the process of coming up with an equation. any help is greatly appreciated. Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b
(-6,3); 8x=7+4
Click here to see answer by scott8148(6628)

Question 408071: The function, p(d) = 1 + d/33, gives the pressure, in atmospheres (atm), at a
depth d in the sea (d is in feet). Note that p(0) = 1 atm, p(33) = 2, and so on. Find the pressure at 120 feet. The pressure at 120 feet is ___ atm.
(type an integer or a simplified fraction)

Click here to see answer by solver91311(24713)

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