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

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Question 75571: 50.Solve the system by substitution.
3x + 3y = 9
y = 2x – 12

Click here to see answer by bucky(2189)

Question 75571: 50.Solve the system by substitution.
3x + 3y = 9
y = 2x – 12

Click here to see answer by chitra(359)

Question 75571: 50.Solve the system by substitution.
3x + 3y = 9
y = 2x – 12

Click here to see answer by jim_thompson5910(28598)

Question 75569: Which of the ordered pairs
(–11, 3), (1, 0), (–7, –2), (–19, 5)
are solutions for the equation x + 4y = 1?

Click here to see answer by jim_thompson5910(28598)

Question 75562: Find four solutions for the following and write the solution as ordered pairs:
y=2/3x-1
Click here to see answer by bucky(2189)

Question 75568: Write the equation of the line that passes through point (–6, 7) with a slope of 0.
A. x = –6
B. x = 7
C. y = –6
D. y = 7

Click here to see answer by chitra(359)

Question 75567: Solve the system by addition.
5x + 9y = –12
x – 2y = –10

Click here to see answer by bucky(2189)

Question 75549: 3x=-3y-21;(0,1)
Click here to see answer by funmath(2925)

Question 75462: How to write an equation of a line with the given slope and y-intercept?
1. m= 3/7 b=-2 2. m=9, b=0 3. m=0, b=-5

How to write an equation of a line through the given points
1. (-1,1) (2,7) 2. (0,-5)(3,-2) 3. (6,11) (3,13)

Click here to see answer by chitra(359)

Question 75639: The Americans with Disability Act requires, amoung other things, that wheelchair service ramps have a slope not exceeding 1/12.
Problem A- Suppose the front steps of a building are 2 feet high. You want to make a ramp conforming to the ADA standards that reaches from the ground to the top of the steps. How far away from the building is the base of the ramp?
Problem B- Another way to give specifications on a ramp is to give allowable inches of rise per foot of run. In these terms, how many inches of rise does the ADA requirement allow in 1 foot of run?

Click here to see answer by Earlsdon(6287)

Question 75726: Please show me how to calculate the Slope and Intercept for this equation.
36X+9Y=18 also for this equation Y+3X+2. Thank you so very much.
Click here to see answer by checkley75(3666)

Question 75673: Find the x and y intercepts of a line whose equation is y= -3/5X +2
Click here to see answer by checkley75(3666)

Question 75807: Can you please help me solve this problem?
-8(1/4t - 4)= 12 - 2t
Click here to see answer by Edwin McCravy(8912)

Question 75806: Determine the Equation of each line
x intercept=4 y interccept = -3

Thanks!
T
Click here to see answer by bucky(2189)

Question 75806: Determine the Equation of each line
x intercept=4 y interccept = -3

Thanks!
T
Click here to see answer by venugopalramana(3286)

Question 75887: How do I solve the following by substitution method? y=-4x+8 , y=x+7
Click here to see answer by checkley75(3666)

Question 75799: A small company produces both doll houses and sets of doll furniture. The doll houses take 3 hours of labor to produce, and the furniture sets take 8 hours. The labor available is limited to 400 hours per week, and the total production capacity is 100 items per week. Existing orders require that at least 20 doll houses and 10 sets of furniture be produced per week. Write a system of inequalities representing this situation, where x is the number of doll houses and y is the number of furniture sets. Then graph the system of inequalities.
Click here to see answer by ankor@dixie-net.com(15661)

Question 76169: How do you change this linear equation:-7x+5y=-2x+1 to a slope intercepting form
Click here to see answer by josmiceli(9697)

Question 76205: 3x-5y=-10 how do you graph this?
Click here to see answer by checkley75(3666)

Question 76213: What is the relationship between the units for the x and y axes and the units for the slope?

Click here to see answer by checkley75(3666)

Question 76168: How do you change this linear equation:-7x+5y=-2x+1 to aslope intercepting form

Click here to see answer by checkley75(3666)

Question 76159: Write each equation in slope-intercept form.
y-2=3(x-1),

Click here to see answer by checkley75(3666)

Question 76204: x-3y=-9 how do you graph this?
Click here to see answer by bucky(2189)

Question 76257: Given f(x) = –x – 3, find f(a – 2).
Click here to see answer by tutorcecilia(2152)

Question 76203: 2x-6y=-12 how do you graph this?
Click here to see answer by tutorcecilia(2152)

Question 76202: 5x-3y=-15 how do you graph this?
Click here to see answer by tutorcecilia(2152)

Question 76298: Find the value of m that makes y = mx + 3
5x - 2y = 7 an inconsistent system.
I have big problems with this. Algebra and me do not get along. Thanks
Click here to see answer by kev82(148)

Question 76301: solve the equation for y in terms of x.
1. x+y=2
2. -2x+y=5
3. 5x+y= -1
how do you do these? please help me.
Click here to see answer by checkley75(3666)

Question 76504: Please find X and Y: 2X+3Y=16, 5X+3Y=44
Please show work (explain process). Thanks
Click here to see answer by checkley75(3666)

Question 76557: 1. Complete thes ordered pairs for the equation 2y=-x-5:
(0,-5/4); (-3, -4); (-35, 15) I am not sure if I did these correctly. Help
2. Is (2, -3) a solution of 2x-3y=-5? I said no, but my classmate was yes????
3.A line parallel to the graph of 11x=9y-6 ( I don't understand)
4. Write an equaation in slope-intercept form. (don't understand)
A. Through (-4,-2) with slope -1.
B. Through (-4,6) and (-3,-1).
Click here to see answer by checkley75(3666)

Question 76535: find the slope and y-intercept of the line whose is equation is given
x+8=y
4
Click here to see answer by checkley75(3666)

Question 76628: for each pair of equations, determine if the lines are parallel, perpendicular, or neither.
y-3x=10 and 3y+x = -5
I have no idea how to start. Thank you.
Click here to see answer by Earlsdon(6287)

Question 76624: passes through (1,4) and is parallel to a line whose equation is y=3x+5?
my start: 4=3x+5
4=3(1)+5
-3+4=-3+3+5
1=x+5 ?????

Click here to see answer by scott8148(6628)

Question 76693: Find the slope of any line perpendicular to the line through points (9, 12) and (10, 4).
I got -8 but I am not sure if it is right.
Click here to see answer by funmath(2925)

Question 76694: Determine which two equations represent perpendicular lines.
(a) y=2/9x-3 (b) y=3x-2/9 (c) y=-1/3x+2/9 (d) y=1/3x-2/9
Click here to see answer by funmath(2925)

Question 76776: Will someone please help me with this problem?
Five times the difference of a number and eight is negative thirty. Find the number.
Thank You,
Sabrina

Click here to see answer by Earlsdon(6287)

Question 76816: Complete the ordered pairs for the equation y = 7x + 21.

( , 0), (2/7, ), (0, ), (-2/7, )
Click here to see answer by funmath(2925)

Question 76846: Write an equation of the line that passes through the point and has the specified slope. Sketch the line. m=0, (-5/4, 6)
Click here to see answer by funmath(2925)

Question 76822: Find the slope of the line passing through the points (8, –3) and (1, 4).
Click here to see answer by checkley75(3666)

Question 76912: y=1/3x+1/2 y=1/3x-2

Click here to see answer by chitra(359)

Question 76969: I am trying to find the solution for s in the following equation:
D= c-s/n
I know I am supposed to multiply both sides to clear the quation of fractions. I am not sure how to do that with letters. I believe the answer is s=nd+c but don't know how to show my work. Can you help please?
Click here to see answer by ankor@dixie-net.com(15661)

Question 76991: (-6, 1) (2, 3)
Click here to see answer by checkley75(3666)

Question 76926: can someone help me on this? i dont know how to solve and find the following: linear or non-linear?, standard form, slope, and the y-intercept; for
y=(12-x)/2x
Click here to see answer by checkley75(3666)

Question 77269: How do you write the linear equation in slope-intercept form: 9x-7y=6
Click here to see answer by tutorcecilia(2152)

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