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

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Question 469416: Find the slope of the hill pictured below.
|
|12 ft
|
[-------------------]
100 ft.
Click here to see answer by jorel1380(3719)

Question 469575: 14x=-10-11y
-11x=-11+11y
Click here to see answer by jorel1380(3719)

Question 469635: Find the slope and the y-intercept of the line with equation y - 2x + 3 = 0
Click here to see answer by Tatiana_Stebko(1539)

Question 469652: My question says: Find an equation of the line having the specified slope and containing the indicated point. Write your answer in slope-intercept form.
m=-4;(-7,6) Can you show me the steps to slove this? Thanks
Click here to see answer by Tatiana_Stebko(1539)

Question 469760: Find the equation of the line in standard form through the points (-3, -1) and (-5,7).
Click here to see answer by mananth(16946)

Question 469528: Determine whether each equation has the given ordered pair as a solution.
3q − 2p = −8; (1, −2)
Click here to see answer by bucky(2189)

Question 469864: Find three solutions for this equation.
y= 1/2x + 5
Click here to see answer by sofiyac(983)

Question 469862: 2x+y=1
x+y=3
Click here to see answer by sofiyac(983)

Question 469866: y = −4x + 3
16x + 4y = 12
(x,y)=
Click here to see answer by sofiyac(983)

Question 469820: use graphs the find equation of the horizontal or vertical line
1. line passes (1,3) and parallel to the line L: y = 4

2 line passes (1,3) and perpendicular to the line L: y = 4

Click here to see answer by sofiyac(983)

Question 469698: The question is: Solve each system by elimination.
x-y=11
2x+y=19
How do I do this? In dummy language please. I want to actually understand what it is I'm suppose to be doing. Thanks much!
Click here to see answer by ankor@dixie-net.com(22740)

Question 469977: If a highway rises 415 feet over a horizontal distance of 3400 feet what is the slope of the road?

Click here to see answer by ewatrrr(24785)

Question 470005: How do I solve the linear equation for x: 6-8(x+1)+3x-7=2(x+6)
Click here to see answer by sofiyac(983)

Question 470016: what is the equation of the line in standard form that is parallel to 4x+y= 3 and contains (4,7)
Click here to see answer by sofiyac(983)

Question 469979: find the slope, if it exists, of the line containing the points(-9,1/2)(-4,1/2)
Click here to see answer by sofiyac(983)

Question 470204: x + 12 < 4
Click here to see answer by jim_thompson5910(35256)

Question 470174: -5x -21 = -22 2/3
what is x
linear equation
Click here to see answer by Tatiana_Stebko(1539)

Question 470192: Find the area of a rectangle with the vertices at (0,9) (0,-4) (5,-4) and (5,9)
Click here to see answer by Alan3354(69443)

Question 470477: solve by graphing -2x+2y=8
2x+y=1
Click here to see answer by stanbon(75887)

Question 470476: Solve by substitution x=2y
y=2x+3 Check answer
Click here to see answer by MathLover1(20849)

Question 470453: A balloon takes off from a location that is 107 ft above sea level. It rises 48 ft/min. Write an equation to model the balloon�s elevation h as a function of time t.
Click here to see answer by Alan3354(69443)

Question 470577: solve the area of the triangle with base and height the base = 2 meters and the height = 12 meters
A = 1/2bh
PLEASE SHOW ALL OF YOUR WORK
Click here to see answer by Tatiana_Stebko(1539)

Question 470596: Please help me solve this equation find the slope if it exists of the line {{y = 219/298 x -6.7}} Thank you.
Click here to see answer by Tatiana_Stebko(1539)

Question 470581: determin the equation of the line perpendicular to the line 3y+4x=1 passing through the point (-1,2)
Click here to see answer by mananth(16946)

Question 470614: find the distance of the point (2,5) from the line 3x+y+4=0 measured parallel to a line having slope 3/4?
Click here to see answer by Alan3354(69443)

Question 470651: 6x + 4= -(x - 18)
Click here to see answer by sofiyac(983)

Question 469738: determine the slope of the line passing through each pair of points.
1. (1,4) (2,7)
2. (-2,4) (5,-10)
3. (-3,6) (-3,8)
4 (-4,6) (-6,-1)
Click here to see answer by sofiyac(983)

Question 470902: what is the slope of the line that contains the points (5,-9) and (5,9)?
Click here to see answer by MathLover1(20849)

Question 470913: solve: for w p=29l=29w
Click here to see answer by Alan3354(69443)

Question 471015: I need help finding the slope of x+3y=6 m=
Find the solution set for -2x>1/9
5x-15=3y use intercepts to graph the equation
graph the equation and identify the y intercept for y=1/4x
Click here to see answer by jim_thompson5910(35256)

Question 471026: A student having marks of 65 and 75 wishes to raise the average of the two marks and a test mark to 80. What must he receive on the test?
Click here to see answer by algebrahouse.com(1659)

Question 471034: Find the slope of the line that passes through the given pair of points:
a) (4,5) and (3,8)
b) (‐2, ‐2) and (4, ‐4)
Click here to see answer by algebrahouse.com(1659)

Question 471023: A wire 10 meters long is divided into three parts, one of which is 2 meters longer than the first and the third is 2 times longer than the second. find the length of each.
Click here to see answer by jorel1380(3719)

Question 471025: A money in the amount of P3294 is shared by Juan, Pedro and Jose. Pedro pays 4/5 as much money as Juan and Jose pays 4/5 as much as Pedro. How much does each pay?
Click here to see answer by jorel1380(3719)

Question 471155: A school has just purchased new computer equiptment for $25,000.00. The graph shows the desciption of the equiptment over 5 years. The point (0, 25,000) represents the purchase price and the point (5,0) represents when the equiptment will be replaced. Write a linear equation in slope-intercept form that models the value of the equiptment, y, x years after purchase. Use the model to predict the value of the equiptment after 2 year?
Click here to see answer by ewatrrr(24785)

Question 471169: Find the x- and y-intercepts and graph the equation plotting the intercepts. Please show all of your work. Submit your graph to the Dropbox. 2x - 3y =9
Click here to see answer by ewatrrr(24785)

Question 471170: 3. Given the linear equation y= -2/5x -4, find the y-coordinates of the points (-5, ), (0, ), and (5, ). Please show all of your work. Plot those points and graph the linear equation. Submit your graph through the dropbox.
Click here to see answer by ewatrrr(24785)

Question 471105: Describe everything you know about the linear equations x = 7 and y = 4
Click here to see answer by Edwin McCravy(20054)

Question 471390: 4x-9y=36 for y how do I solve this problem
Click here to see answer by faceoff57(108)

Question 471406: The function, p(d)=1+d/33, gives the pressure in the atmosphere(atm), at 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 140 feet.
Click here to see answer by robertb(5830)

Question 471413: The following is what I am looking for in describing a line. This is what is needed to describe a linear graph after graphing. This describes the graph without having the graph available.

The items needed: x intercept, y intercept, slope, slant, and the quadrants the line passes through when graphed..

Example: Graph 5x + 2y = 10. (Actually graph this and work through the steps as we go. Ask questions as needed.)

1. x intercept: Let y = 0, substitute in place of y and then solve for x: 5x = 10, x = 2.

2. y intercept: Let x = 0, substitute in place of x and then solve for y: 2y = 10, y = 5.

3. slope: Put into slope intercept form: Solve for y. Add -5x to each side to get 2y = -5x + 10. Now divide by 2 to solve for 1y: y = (-5x + 10) / 2 but each term can be put over 2 so we have y = (-5/2)x + 10/2 = (-5/2)x = 5 has form y = mx + b whre m = -5/2 for the slope. Note that we can also check our y intercept here since b should also be the y intercept. Glancing back, we found that we did get 5 above for the y intercept. This is just an additional safeguard.

4. Slant: If the slope is positive we slant to the right /, if the slope is 0 we are horizontal __, If the slope is undefined we are vertical |, but we have a slope that is negative and it will slant to the left. \.

5. Quadrants passing through: This line will pass through Q1, Q2, and QIV and will not enter QIII.

Note: Just describe the graphs. Give the five characteristics that I outlined above for each line graphed.

Your turn. Describe the graph of the linear equation: 3y � 2y = 18. Do so by first graphing it for yourself. Then list the five characteristics above in describing your graph and post in this thread.
Click here to see answer by Tatiana_Stebko(1539)

Question 471473: what is the slope of a line that is perpendicular to the graph of: y=-1/2x+4?
Click here to see answer by nerdybill(7384)

Question 471473: what is the slope of a line that is perpendicular to the graph of: y=-1/2x+4?
Click here to see answer by bucky(2189)

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