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

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Question 49894: I cannot figure out this question:
The pressure at a certain depth in the ocean can be approximated by the equation P=15 + 1/2 D, where P is the pressure in pounds per square inch and D is the depth in feet. Use the equation to find the depth when the pressure is 40 lb/in 2.
isbn: 0618372628
Click here to see answer by stanbon(57219)

Question 49893: I am having a problem with this question: Could you please help
Y= -7X-1
ISBN: 0618372628
Click here to see answer by rapaljer(4667)

Question 49916: How do I determine whether the point (-2, -2) lies on the line 2x + 3y = 10?
Click here to see answer by mathchemprofessor(65)

Question 49997: write an equation for the line described: a line whose slope =3 and passes through the point (-2,7)
Click here to see answer by AnlytcPhil(1276)

Question 49987: please tell me how to solve this problem.
x y
- + - = 1
8 2
Click here to see answer by AnlytcPhil(1276)

Question 50057: find the height of a parallelogram with a base of 12 yards and an area of 38 yards squared.
Click here to see answer by tutorcecilia(2152)

Question 50149: Could I get some help with graphing this equation: 2x + y = -8? Thank You
Click here to see answer by AnlytcPhil(1276)

Question 50150: Could I get some help with graphing this equation: 4x - 3y = 12. Thank You
Click here to see answer by AnlytcPhil(1276)

Question 50255: You have to slove the system of linear equations using linear combinations.
5x-3y=26
3x+3y=8
Click here to see answer by stanbon(57219)

Question 50252: You have to use the substitution method.
3x+4y=14
y=-5/2x
Click here to see answer by hulamc723(15)

Question 50347: I just do not understand how to solve the problem either.
I thank you in advance for your help.
Regards,
Star
Click here to see answer by rapaljer(4667)

Question 50342: Sketch he grapgh of the equation and show the coordinates of three solution points (including x and y intercepts) x=-6
Click here to see answer by rapaljer(4667)

Question 50371: What is the x-intercept for the line 2x+1=y?
Click here to see answer by stanbon(57219)

Question 50368: Coula anyone help with the following equation: 2x + 8y = -16 Thanks!
Click here to see answer by stanbon(57219)

Question 50368: Coula anyone help with the following equation: 2x + 8y = -16 Thanks!
Click here to see answer by tutorcecilia(2152)

Question 50367: Could anyone help me with the following equation: 4x - y = 4 Thanks.
Click here to see answer by tutorcecilia(2152)

Question 50364: Please help me solve the equation 2x - 6 = 2. I dont understand how to do this problem. The book isnt very explanitory. Thank YOu
Click here to see answer by tutorcecilia(2152)

Question 50366: Could someone please help me with the following equation: 2x = y = -4
Thank you
Click here to see answer by stanbon(57219)

Question 50365: could someone please help me solve the following equation: 3y + 18 = 0
Thank You
Click here to see answer by stanbon(57219)

Question 50319: Write an equation whose graph has only x intercepts at x=-2 and x=3 and is symmetric.
Click here to see answer by stanbon(57219)

Question 50477: I am having trouble w/ this linear equation. Your help is much appreciated.
Thank you.
Solve: -3/4x=-9 1/9
Click here to see answer by stanbon(57219)

Question 50477: I am having trouble w/ this linear equation. Your help is much appreciated.
Thank you.
Solve: -3/4x=-9 1/9
Click here to see answer by tutorcecilia(2152)

Question 50481: What is the slope of a line that is perpendicular to the line that passes through the points (4,7) and (9,3)?

(can you include some steps to finding this answer?)
Click here to see answer by adamchapman(301)

Question 50431: how do I find solutions to graph
y=1/2x
Click here to see answer by tutorcecilia(2152)

Question 50434: 5+x=5
---------
2

Click here to see answer by jackytavares(5)

Question 50479: a2x2+3(3-2ax)= (ax-6)2
Click here to see answer by stanbon(57219)

Question 50307: Why is the letter m used to represent slope?
Click here to see answer by rapaljer(4667)

Question 50528: 14/x=5/3(x-18.5)
Click here to see answer by sinadone(8)

Question 50583: is x = 3.4 a solution of 3(x+2)- 3(x - 1)=9

Click here to see answer by mszlmb(115)

Question 50598: I can't seem to figure out the problem y=2x-1. Also, I'm not sure how to graph it in a linear line. Could you help me?
Click here to see answer by Nate(3500)

Question 50643: X^2/9+Y^2/16=1
Click here to see answer by rapaljer(4667)

Question 50675: Find the slope and the y-intercept.
y = 4x – 3
Please help
Click here to see answer by rapaljer(4667)

Question 50687: I have a TI84 plus graphing calculator> Could someone please explain to me how to use it in regards to graphing linear equations Thanks
Click here to see answer by rapaljer(4667)

Question 50688: Finding the slope of a line from its graph or from the coordinates of two points. Could someone help me with the following question?
Find the slope of the line containing the given points: (0,0) and (2,2) Thanks
Click here to see answer by venugopalramana(3286)

Question 50686: How do you use a graphing calculator to graph the following equation:
x2-11x+18. I am assuming by X2 it means x to the second power.
Click here to see answer by AnlytcPhil(1276)

Question 50686: How do you use a graphing calculator to graph the following equation:
x2-11x+18. I am assuming by X2 it means x to the second power.
Click here to see answer by rapaljer(4667)

Question 50715: i need all the steps to solving this linear equation, thank you.
determine the value of k for which the system of linear equationtions
2x - y = 3
4x + ky = 4
has no solution.
thank you....
Click here to see answer by venugopalramana(3286)

Question 50714: i need all the steps to slove this linear equation, thank you.
2x - 3y = 6
6x -9y = 12
i also need the steps for slope and intercept, thanks
Click here to see answer by venugopalramana(3286)

Question 50712: could u please show me the answer to this linear equation, i need all the steps to finding the answer so that i will understand when test time rolls around. thank you
2x - 5y = 10
6x - 15y = 30
Click here to see answer by venugopalramana(3286)

Question 50749: How do you find the slope and intersept of a graph?
Click here to see answer by checkley71(8403)

Question 50802: I need to write an equation in slope-intercept form that satisfies each condition; then graph.
I am given only that the x-intercept = -4 and the y-intercept = 4.
I looked up the definitions of x-intercept and y-intercept. And reading in my textbook I see the formula of y = mx+ b. In that formula I understand that m is the slope and b is the y-intercept. But what is the x-intercept in this formula??
Thank you and I hope tonight is possible for an answer?
Click here to see answer by Earlsdon(6287)

Question 50801: could you please help me solve step by step : 4(k+2)-8k-5=-3k+9-2(k+6)
Click here to see answer by SnowXclouD(11)

Question 50767: How would you use a graphing calculator to find the slope of the line containing the given points (0,0) and (2,2). I am using a TI84plus. Thanks
Click here to see answer by tutorcecilia(2152)

Question 50734: Solve for x:
6-x/3 + x/-5 = -7
Click here to see answer by darq(90)

Question 50736: solve for x:
(6-x)/3 + x/-5 = -7
Click here to see answer by tutorcecilia(2152)

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