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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 217757: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is �no solution� or �infinitely many solutions.�
3x � 2y = -7
-9x + 6y = 21

Click here to see answer by stanbon(75887)

Question 217971: Find the slope and y intercept
Y=3.9x -7
Click here to see answer by checkley77(12844)

Question 218072: find the x and y intercepts of the graph of -2x-4y=-20
Click here to see answer by drj(1380)

Question 218071: graph the equation and show your slope: -4x-2y=-6
Click here to see answer by drj(1380)

Question 218151: 4w-5w+3(w-7)=-4+7
Click here to see answer by rfer(16322)

Question 218151: 4w-5w+3(w-7)=-4+7
Click here to see answer by jim_thompson5910(35256)

Question 218197: Graph each system of equations and states its solution.
y= 1/3x + 4
y= -1/3x + 2
Click here to see answer by muhammadwaqas69(1)

Question 218263: 4x+y = 2
12x+3y = 6
Click here to see answer by drj(1380)

Question 218406: I need to know the basic outline of how to do a linear equation?
Click here to see answer by britt_xoxo(2)

Question 218286: Find the equation of the line that passes through the point (-4,6) and has a slope of 3/4.
Is the correct answer 3x-4y-12=0
If this is not the correct answer could someone show me what I'm doing wrong. thanks
Click here to see answer by checkley77(12844)

Question 218433: a 4-lb package of ground beef costs $5.96. Find the unit price
Click here to see answer by rfer(16322)

Question 218444: a phone call between two cities costs $10.89 for 100 minutes. What is the rate in cents per minute?
Click here to see answer by checkley77(12844)

Question 218431: a phone call between two cities cost $10.89 for 100 minutes. What is the rate per cent per minute?
Click here to see answer by drj(1380)

Question 218475: Solving Radical equations
It says check whether the given x-value is a solution of the equation

Click here to see answer by solver91311(24713)

Question 218459: the height H (in feet) of a ball thrown into the air from top of a building after t seconds is givin by H=-16t^2+59t=224...Estimate the height of the ball after 4.5seconds
Click here to see answer by solver91311(24713)

Question 218461: 22.06 to 77.12 Find fraction notation for the ratio
Click here to see answer by stanbon(75887)

Question 218502: 3(x-1)=2x-y
Click here to see answer by checkley77(12844)

Question 218502: 3(x-1)=2x-y
Click here to see answer by stanbon(75887)

Question 218501: 4y+20=5x
Click here to see answer by checkley77(12844)

Question 218612: Find the slope of a line passing through the points (1,3) and (2,5)?
Click here to see answer by rfer(16322)

Question 218612: Find the slope of a line passing through the points (1,3) and (2,5)?
Click here to see answer by drj(1380)

Question 218732: Write the slope-intercept form of the equation of th eline witht he indicated slope and y-intercept.
Slope=2;y-intercept=-9
Click here to see answer by drj(1380)

Question 218689: Line 1 is described by the equation 3y - 2x = -3. Line 2 goes through the origin and intersects line 1 at x=6. What equation describes line 2?
Click here to see answer by drj(1380)

Question 218774: write an equation in slope-intercept form for the line that satisfies the following condition. slope 3 and passes through (4,20)
Click here to see answer by drj(1380)

Question 218784: write an equation in point-slope form for the line that satisfies the following condition. slope 1/2 and passes through (4,-1)
Click here to see answer by MathTherapy(10552)

Question 218765: Marcia determines the number of a particular model of bicycle she can sell in her shop each month varies inversely with the price of the bicycle. If she sold 34 of the bicycles when the price was $450, how many can she expect to sell if she lowers the price to $425?
Click here to see answer by josmiceli(19441)

Question 218764: Roberto finds that the score he achieves on a math exam varies directly with the average amount of time (in minutes) he spends studying after class. After studying an average of 90 minutes, his score was 72. What will his score be if he increases the amount of time to an average of 100 minutes.
Click here to see answer by josmiceli(19441)

Question 218796: wwhen two times a number is decreased by 3 the result is 11

Click here to see answer by chibisan(131)

Question 218996: How do I graph the inequality of the following;
3x-6 is greater than 0
Click here to see answer by checkley77(12844)

Question 219034: x-4y=-8
Click here to see answer by jim_thompson5910(35256)

Question 219072: How do you know when an equation has no solution?
Click here to see answer by user_dude2008(1862)

Question 219124: I can't figure out how to solve this. I am currently learning about Linear Functions.
2x+1/3 = 2x-1/2 Solve for X.
PLEASE HELP!
Click here to see answer by jim_thompson5910(35256)

Question 219144: Give a real-life example of two quantities that vary directly.
Click here to see answer by jim_thompson5910(35256)

Question 219170: how do you write out this algebra questions if tution is $8375 and its 67% of your annual income what is your income

Click here to see answer by checkley77(12844)

Question 219156: slope =-1/2 , contains U(2,-2)
Click here to see answer by checkley77(12844)

Question 219255: i have tried this problems plenty of times and still cant figure out the right answer. not a graph equation
1-2(3c-5)=10-6c
and
5(b-1)-3b=7b-5(1+b)
Click here to see answer by checkley77(12844)

Question 219318: identify the correlation you would expect to see between the weight of baggage someone carries and the speed which he or she walks.

correlation
explanation
Click here to see answer by stanbon(75887)

Question 219411: How do you find the rate of change?
The cost of group musuem tickets is $48 for four people and $78 for ten people.
Click here to see answer by stanbon(75887)

Question 219411: How do you find the rate of change?
The cost of group musuem tickets is $48 for four people and $78 for ten people.
Click here to see answer by Theo(13342)

Question 219478: Find the slope of the line that passes through the pair of points (�1, �9) and (�3, 10).

Click here to see answer by Alan3354(69443)

Question 219461: find the x intercept of y=x+4
Click here to see answer by Earlsdon(6294)

Question 219523: Is 2xy=6 a linear equation?
Click here to see answer by rapaljer(4671)

Question 219545: Im not sure who will answer this question so thank you all in advance!! Are all linear equations functions? Is there an instance when a linear equation is not a function? Support your answer. Create an equation of a nonlinear function and provide two inputs to evaluate.

Much Appreciated..
Thank You
Click here to see answer by jim_thompson5910(35256)

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