Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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Question 267851: please help me solve this problem
find the point that is one-fourth of the distance from the point P(-1,3) to the point Q(7,5) along the segment PQ.
Click here to see answer by Alan3354(69443)

Question 267875: is (2,2) a soultion?

Click here to see answer by Alan3354(69443)

Question 267907: please help me on this problem. I don't know which catergory this is in,but the problem is.
Kayla paid $137.80,including 6% tax for her graphing calculator. How much did the calculator itself cost.
This is my work.
a)variables
b) 100[p-0.06]=[137.80]100

100-6x=13780
-100 -100
-6x=13680
/-6x /-6x
x=
Click here to see answer by unlockmath(1688)

Question 267981: Solve the system of equations by graphing. 9x - 6y = 12 9x = 6y + 12
Click here to see answer by richwmiller(17219)

Question 268039: I need to find the slope and y-intercept of
Click here to see answer by Alan3354(69443)

Question 268227: i am trying to use the given conditions to write an equation for the line slope intercept form: (10, 12) and parallel to y=3x-8. i just need to see how it is worked out im sure that i have the right answer but get confused trying to work backwards
Click here to see answer by Alan3354(69443)

Question 268224: y=5x*2-4
Click here to see answer by checkley77(12844)

Question 268319: y=2x
x+y=3
and find out the ordered pair
Click here to see answer by stanbon(75887)

Question 268394: Graph the equation and identify the y-intercept 5y+2x=5

Click here to see answer by math-Tutor-Online(2)

Question 268130: I have Three problems on my work sheet that I do not understand how to do. The instructions on the paper says use Substitution to solve each system of equations. My three problems look like this 1. x+2y=13 3x-5y=6 2. x+5y=4 3x+15y=-1 3. x-5y=10 2x-10y=20..... If you could would you please help me figure these problems out. Thank you so much.
Click here to see answer by ankor@dixie-net.com(22740)

Question 268506: 74. Road Grade
When dirving down a mountain road, you notice warning signs indicating that it is a "12% grade." This means that the slope of the road is -12/100. Approximate the amount of horizontal change in your position if you note from elevation markers that you have descended 2000 feet vertically.
I stuck I don't get it can you help. Thanks
Click here to see answer by josmiceli(19441)

Question 268544: What is the x-intercept of the following equation:
y=(-1/2)x*2 + 2x + 10
Click here to see answer by checkley77(12844)

Question 268638: use lines with the equation 3x+4y=12 and 6x+ry=12
a)find r if the lines are parallel.
b)find r if the lines are perpendicular
Click here to see answer by Alan3354(69443)

Question 268615: The following needs to be solved by graphing:
4x+y=6
y=-4x-1
I also need to know if the lines have no solution or infinitely many solutions.
I got the coordinates (0,6) and (0,-1).When graphed, i got parallel lines so I believe it has no solution. Please check to see if this is correct for me.
Click here to see answer by jim_thompson5910(35256)

Question 268699: How to identify and graph the asymptote and y intecept for graphing exponential growth.
y= 3(2)^x-1
Click here to see answer by drk(1908)

Question 268786: how do you graph x-2y=-4 ?
Click here to see answer by persian52(161)

Question 268794: A beef roast weighing 6.8 lb costs $2.25 per pound. What is the cost of the roast?

Click here to see answer by rfer(16322)

Question 268841: Write a slope intercept equation for a line with the given characteristics.
Passes through (-3,7) and (-1,-5)
Click here to see answer by checkley77(12844)

Question 268839: Graph the equation:
3y-2x=3
Click here to see answer by checkley77(12844)

Question 268789: Find equation of the line given slope and containing the given point m=7/8 (4,-9)
Click here to see answer by checkley77(12844)

Question 268840: Find the distance between the pair of points. Give an exact answer and where appropriate, an approximation to three decimal places.
- The points (0,1) is on a circle that has center (-3,5). Find the length of the diameter of the circle.
Click here to see answer by palanisamy(496)

Question 268949: find three points M,N and P such that m(M,N)=1/2 , m(M,P)=5 and m(N,P)=-2/3
Click here to see answer by drk(1908)

Question 268997: The coordinates of the point have equal absolute value, the point is in the second quadrant, and the distance of the point from the origin is 2
Click here to see answer by drk(1908)

Question 269068: The price P for a watermelon varies directly with its
weight w.
a) Write a formula for this variation.
b) If the price of a 30-pound watermelon is $4.20, then
what is the price of a 20-pound watermelon?
Click here to see answer by rfer(16322)

Question 269071: Sketch the graph of each equation.
2x -3y = 6
Click here to see answer by checkley77(12844)

Question 269200: Find the slope of a line parallel to the line that passes through the given points. ( -6, 2) and ( 4, -5)
Click here to see answer by josmiceli(19441)

Question 269143: I am confused on how to graph the following inequality:

6x + 3y = 18
Thank you.....
Click here to see answer by persian52(161)

Question 269236: a 25lb bag of salt cost $4.50 and a 50lb bag of salt cost $6.00 find the equation of the cost as a function of weight in slope intercept form. Also fill in the blanks below. Also determine how much a 1001lb bag of salt would cost.
Y represents -
M represents -
X represents -
B represents -
Click here to see answer by checkley77(12844)

Question 269185: What is an equation or inequality to model the situation:
The perimeter of a square with a side length s is greater than or equal
to seventy plus five.
Click here to see answer by stanbon(75887)

Question 269390: hi,i am so confused in math and my main struggle is graphs can you help me please
Click here to see answer by josmiceli(19441)

Question 269445: graph the equation using hte slope and the y-intercept
y=1/10x+6

Click here to see answer by JBarnum(2146)

Question 269568: 3x=-y+3
Click here to see answer by Alan3354(69443)

Question 269583: Can you please help me graph the following equation and identify the y-intercept of y=-3/2x+4
Click here to see answer by checkley77(12844)

Question 269580: Can you help me solve the problem 2-6y-9y < 92 using the addition and multiplication principles?
Click here to see answer by checkley77(12844)

Question 269715: Draw a graph of the following:
f(x)= {x^2+3x+2/x+1, for x≠-1
{7, for x=-1
Click here to see answer by Alan3354(69443)

Question 269976: In the problem 2y-8=x what is the next step to put it in slope intercept form? do you add the 8 to its self then add it to the x? then would it be 2y=x+8?
Click here to see answer by rfer(16322)

Question 270058: how would i make a t-table if y<2x-1/3x ? and what would i do if it were less than or equal too instead of just less than????
Click here to see answer by Tobiasz(54)

Question 270083: Graph the following linear equation by finding x- and y-intercepts.
2x � 4y = -8

Describe the graph verbally by showing the calculation of the two intercepts and giving the ordered pair for each. Describe the line you have graphed. The description should include the quadrants through which the line passes, and the direction the line leans (forward or backward).

Click here to see answer by Tobiasz(54)

Question 270183: Test Algebraically whether the graph is symetrical with respect to the x-axis, the y-axis, and the origin.
6x+7y=0
Click here to see answer by drk(1908)

Question 270145: how can i graph a line with 3x+4y=12? help please! thanks in advance
Click here to see answer by Theo(13342)

Question 270204: Write an equation for a function that has a graph with the given circumstances
- The shape of y=sqrt(x) but shifted left 6 units and down 5 units.
Click here to see answer by Theo(13342)

Question 270218: What is the equation of the line, in slope-intercept form, that passes through (3, -1) and (-1, 5)?
Click here to see answer by jim_thompson5910(35256)

Question 270240: solve and graph 9x+6y<18
Click here to see answer by Alan3354(69443)

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