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

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Question 148976: Can you tell me if these systems are consistent, inconsistent, or dependent?
3x - 3y = -9
9x - 9y = -27
Please help.
Ellen
Click here to see answer by stanbon(75887)

Question 148974: I need the coordinates of the x-intercept. I think it is either (-6, 0) or (-3,0)
I am not sure if either of these pairs are correct, or if I have them in right order. I am so confused.
Thank you, Ellen
Click here to see answer by stanbon(75887)

Question 148994: can anyone help find the slope of the line containing the two given points? A. (5,9);(8,0) m= B. (1,5);(-1,-5) m= C. (0,-4);(3,-3) M= D. (6,4);(11,4) M= I just cant seem to be able to figure these out.
Click here to see answer by stanbon(75887)

Question 149043: I need to write this problem into slope-intercept form and i don't know how.
passing though (3,6) and (2, -6)
Click here to see answer by mangopeeler07(462)

Question 149043: I need to write this problem into slope-intercept form and i don't know how.
passing though (3,6) and (2, -6)
Click here to see answer by Earlsdon(6294)

Question 149097: Problem: Walt made an extra $9000 last year from a part-time job. He invested part of the money at 9% and the rest at 8% he made a total of $770 in interest. How much was invested at 8%?
Click here to see answer by josmiceli(19441)

Question 149100: An express and local train leave gray's lake at 3 P.M. and head for chicago 50 miles away. The express travels twice as fast as the local and arrives 1 hour ahead of it. Find the speed of each train.
Click here to see answer by ankor@dixie-net.com(22740)

Question 149190: how to solve this equation x+y<5 x-y>1 by using the graphs of linear inequalities

Click here to see answer by vleith(2983)

Question 149191: I NEED HELP FIND THE SLOPE OF EACH LINE. GRAPH BOTH LINES ON THE GIVEN COORDINATE PLANE. 1. 2X-6Y=-12 M= Y=-3X M= 2. X-Y=4 M= 3X-3Y=-9 M=
Click here to see answer by vleith(2983)

Question 149213: Can someone please show me how to work and graph the following linear equation...
x + y = 150
5x + 8y = 930
Thank you very much!
Click here to see answer by Fombitz(32388)

Question 149217: 2x + 5y = 2
2x - 2y = -12
I am completely stuck on how to go about doing this problem.
I think that the Solutions x and y are always intergers between 5 and -5.
I dont understand how to do the substitution.. im used to X or Y being alone with no other number.
x = ?
Y = ?
If you could, please show me a few steps on How to get the answer
to this problem.
I would greatly appreciate your help
Thank You,
Kerry G
Click here to see answer by nerdybill(7384)

Question 149226: find the midpoint between these points
(-3,7)and(4,-5)
Click here to see answer by nerdybill(7384)

Question 149311: how can u change the equation "x - 5 y = 103" into a "y = mx + b" format.
Click here to see answer by nerdybill(7384)

Question 149330: write equation in point slope form and ax + (or) - by= + (or) - c
With slope 3/5 pasing through (3,5)
Click here to see answer by stanbon(75887)

Question 149327: Write the following equation in the form of ax+ (or) - by= + (or) - c and the point slope form
slope undefined passing through (1,6)
Click here to see answer by stanbon(75887)

Question 149331: Solve the following:
Passing through (5,-9) and perpendicular to x + 7y = 12
Click here to see answer by Alan3354(69443)

Question 149331: Solve the following:
Passing through (5,-9) and perpendicular to x + 7y = 12
Click here to see answer by jim_thompson5910(35256)

Question 149355: What would X= And what would Y= if,
-2x - 3y = -3
and
4x + 5y = 3
I Dont understand how to do this, since you cant use substitution ( i dont think)
And you cant change the signs since they dont have anyn umbers that are alike.
Ive been stuck on this problem for 11minutes now. :-(
i Just need to know what X and Y equal.
And if you could show me How you do it so ill understand for another problem like this i might run into.
Thank you So much,
Keith.
Click here to see answer by stanbon(75887)

Question 149350: find the equation of the line determined by the given information. A. P1=(0,6);P2=(-2,3) ____________ B. P1=(4,-5);P2=(11,2) ___________ . would anyone be able to help me with these?
Click here to see answer by stanbon(75887)

Question 149360: What would X and Y equal if:
-5x + 2y = -5
-5x + y = 0
I think y= 0
And x= 1
But im not sure if thats right or not.
Any help please?
Click here to see answer by Fombitz(32388)

Question 149376: 4x + 3y = 12
Click here to see answer by jim_thompson5910(35256)

Question 149380: graph the line and find the slope
(-2,5) (3,0)
find the slope of the line m=
Click here to see answer by jim_thompson5910(35256)

Question 149382: determine from the slopes and y-intercepts of the two lines wether the linearequations that name those lines are -inconsistent,consistent or dependent. If the equations are consistent,find the common solutionof that system of equations. A. y=5x+3 5x-y=7 __________ . B. x-3y=13 3x=9y+39 _________ . C. 3x-2y=5 2y=3x+7 __________ . D. x+4/5y=4 x-1/2y=-9 ________ .would someone help?
Click here to see answer by Earlsdon(6294)

Question 149329: Express the equation in point slope form and ax + (or) - by= + (or) - c
With slope -1/3 passing through (-2,-5)
Click here to see answer by Alan3354(69443)

Question 149731: 7x+2y=0
Click here to see answer by checkley77(12844)

Question 149729: 2x+y=o
Click here to see answer by Alan3354(69443)

Question 149782: Please can you help me: problem: A student has earned scores of 87,81, and 88 on the first 3 of 4 tests. If the student wants an average (arithmetic mean) of exactly 87, what score must she earn on the fourth test?
I need a solution of how to set the equation up and steps on how to solve the problem. Can anyone help me. Thanks
Click here to see answer by ankor@dixie-net.com(22740)

Question 149791: suppose that the width of a rectangle is 2 inches shorter than the length and that the perimeter of the rectangle is 80. set up an equation for the perimeter involving only L, the length of the rectangle.
Click here to see answer by vleith(2983)

Question 149793: a tennis club offers two payment options:
option1: $32 monthly fee plus $3/hour for court rental
option2: no monthly fee but $6.60/hour for court rental
let x = hours per month of court rental time.
A.) write a mathematical model representing the total monthly cost,c, in terms of x for the following Option 1: C= & option 2: C=
B.) How many hours would you have to rent the court so that the monthly cost of option 1, is less than option 2. set up an inequality an show your work algebraically using the information in part a. round to 3 decimal places if necessary
Click here to see answer by nerdybill(7384)

Question 149815: the linear equation y=3x-5 graph as horizontal/vertical/diagonal line.
Click here to see answer by josmiceli(19441)

Question 149837: hi how r u i am trying 2 score higher own my placement test 2 enter college i having trouble with basics a student earned 87 81 88 on first 3 of 4 test if she wants an average of 87 what score must she earn on 4th test my compass study guide says 92 what sequence is used to find 92
Click here to see answer by Alan3354(69443)

Question 149930: Hi, I am stuck on how to solve these 2 problems, can you please help. -3(x+5)+3=12 and 2/3x+1/6x=2
Click here to see answer by jim_thompson5910(35256)

Question 149942: Suppose that the width of a rectangle is 2 inches shorter than the length and that the perimeter of the rectangle is 80.
a) Set up an equation for the perimeter involving only L, the length of the rectangle.
b) Solve this equation algebraically to find the length of the rectangle. Find the width as well.
Click here to see answer by nerdybill(7384)

Question 149948: Find an equation of the line having the given slope and containing the given point. Express your answer in the form y=mx+b
m=-3 (5,0)
Click here to see answer by jim_thompson5910(35256)

Question 149949: Use the intercepts to graph the equation.
x+3y=6
Click here to see answer by jim_thompson5910(35256)

Question 149950: Find an equation given of the line containing these two points (4,3)(12,7)
Click here to see answer by jim_thompson5910(35256)

Question 149958: Graph the equation
- 3x + 4y = 2

Click here to see answer by jim_thompson5910(35256)

Question 149959: Graph the Equation
- 2x - y = - 3

Click here to see answer by jim_thompson5910(35256)

Question 149957: Graph the equation
-x - y = - 8

Click here to see answer by jim_thompson5910(35256)

Question 149956: Graph the equation
2x + y = 9

Click here to see answer by jim_thompson5910(35256)

Question 149968: how to graph the equation F(x)=18-x using slope intercept form
Click here to see answer by stanbon(75887)

Question 149953: evaluate the funtions rule y=3x^2+4 for x=-2. expain which is the dependent and independent variable. graph the funtion.
Click here to see answer by stanbon(75887)

Question 149953: evaluate the funtions rule y=3x^2+4 for x=-2. expain which is the dependent and independent variable. graph the funtion.
Click here to see answer by joLeeBee(6)

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