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

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Question 745226: Write the slope-intercept equation for the line containing the given pair of points.
(-6,-2) and (3,4)
Click here to see answer by jim_thompson5910(35256)

Question 745286: ahhh help - I lost my notes. I got (17,5) but how?
4x-y=3
9x-2y=11
Click here to see answer by stanbon(75887)

Question 745371: 4x-y=-3
x+y=-2

Click here to see answer by nyke@rediffmail.com(5)

Question 745446: The sum of a two digit number and the number obtained by interchanging the digits is 66. If the digits in the units place is 2 more than the digits in the tens place, find the number.
Click here to see answer by savvyhush23(50)

Question 745590: write in standard form an equation passing through the given point with the given slope
slope= 1/6;(-1,5)
Click here to see answer by Cromlix(4381)

Question 745558: The line that contains (-2,3) and (6,b) has a slope m = -4. Find the value of b.
Click here to see answer by Cromlix(4381)

Question 745816: Generate a table of values for y=-.8x^2+19x-40
Click here to see answer by Alan3354(69443)

Question 745835: Find the x intercept and y intercet of y = x + 1
Click here to see answer by unlockmath(1688)

Question 745858: perpendicular to 3x+4y=12 passes through (3,2)
Click here to see answer by tommyt3rd(5050)

Question 745680: when making a phone call using a calling card a call lasting 6 minutes cost $1.60. a call lasting 13 minutes cost $3.00. Y=cost and X=minutes. Write a linear equation.
predict how much a 25 minute call cost?
Click here to see answer by tommyt3rd(5050)

Question 745935: find the slope of the linear equation y=3x-6
Click here to see answer by tommyt3rd(5050)

Question 745956: use the supplied table of conversions and geometric formulas graph and label the lines using a data or :t-table: y=2x-6
Click here to see answer by Edwin McCravy(20055)

Question 746055: y=10x-1
y=4/5x+6

solution is where they meet
Click here to see answer by Alan3354(69443)

Question 746103: Solve 4x+y=9 if x and y are whole numbers.
How would this be solved?
Click here to see answer by Alan3354(69443)

Question 746360: y=7x-11 in function notation
Click here to see answer by Edwin McCravy(20055)

Question 746359: Express the following equation in slope-intercept form: 9x - 4y = -36
Click here to see answer by Cromlix(4381)

Question 746366: how do i graph the following 2 equations?
equation 1. y = 4x + 3
equation 2. y + x = -5

Click here to see answer by Cromlix(4381)

Question 746462: Can someone help me solve the system of equations here symbolically, graphically and numerically?
3x+y=2
x-y=14

Click here to see answer by unlockmath(1688)

Question 746522: what is the slope of -4x-6=y also y-intercept

Click here to see answer by rfer(16322)

Question 746578: The measure of the larger of two complementary angles is 6 degree
less than twice the measure of the smaller angle. Find the degree measure of each angle

Click here to see answer by rfer(16322)

Question 746643: Find the slope-intercept form of this line: * 3x+2y=16
Click here to see answer by reviewermath(1029)

Question 746742: Find the gradients of the line segments joining this pair of points:(4,9) to (8,25)
Click here to see answer by Cromlix(4381)

Question 746749: Given that y varies directly with x, write the linear fuction relating the two variables if y=6 when x=1/7
Click here to see answer by Cromlix(4381)

Question 746778: Given an equation of a line, find parallel or perpendicular to it going through specified points. Find the appropriate equations and points from the table below. Simplify your equations into slope-intercept form. y = x + 4 ; ( - 7 , 1 )
I am totally dumb founded on how to even start this. Thank you.
MC
Click here to see answer by josgarithmetic(39617)

Question 746788: the slope of the line y=3/2x+4 is changed to 2/7 but they-intercept remains the same. What is the equation of the new line?
Click here to see answer by Cromlix(4381)

Question 746811: how does the graph of the line y=2/3x=1 differ from the graph of the line y=4x+1?
a.) y=2/3x+1 is steeper than y=3x-1
b.)y=3x+1 is steeper than y=2/3x+1
c.)y=2/3x+1 and y=3x+1 do not differ
d.)the y-intercept of y= ex+1 is 2(1/3) unites higher than the y-intercept of y=2/3x+1
e.)the x-intercept of y=3x+1 is 2(1/3) units to the rigfht of the x-intercept of y=2/3x+1
Click here to see answer by MathLover1(20849)

Question 746900: What is the y intercept of y = -3x2 + 7
Click here to see answer by Alan3354(69443)

Question 746894: Find the equation of the line in slope intercept form that passes through (-3,-2) and is parallel to 2x-5y=20

Click here to see answer by Cromlix(4381)

Question 746939: hi. this is really important and URGENT. i have got a test tomorow and this type of question would definitely be there. please help me out.
the question is: the slope of a taangent is 3. the point on the tangent is (3,5). the tangent intersects the equation: y=ax^4+bx^2+cx+d. find the a,b and c and d values. this question is part of grade 12 calculus. I REALLY APPRECIATE ANY HELP GIVEN. THANKYOU.
Click here to see answer by Alan3354(69443)

Question 746994: givin the equation 3y=6x-2 determine the slope and y intercept?
Click here to see answer by jim_thompson5910(35256)

Question 746844: I don;t get this graphing thing at all! I have to solve the system of linear equations by graphing:
3x-y=0
6x+y=9
Can someone help me? or point towards a site that will graph it and show me how? I have a test on this on Sunday and have been working on it all week. I don;t get it!
Click here to see answer by ankor@dixie-net.com(22740)

Question 746995: Explain how you would change the equation x ^ 2 - 4y - 4x + 24y = 36 into standard form, show all steps and identify the conic.
Click here to see answer by josgarithmetic(39617)

Question 747077: Find the equation (in slope-intercept form) of the line passing through the points with the given coordinates
(-2,-5),(0,4)
Click here to see answer by rfer(16322)

Question 747364: Which of the following set of legs can be those of a triangle?

A. 11,6,2
B.14.2,21.7,36
C.11.5,23.6,12.1
D.12 2/5,19 8/15,31 9/10
Click here to see answer by Alan3354(69443)

Question 747405: Which of the following describes the line containing the points
(5,-2) and (9,-2)?
Click here to see answer by FrankM(1040)

Question 747408: I am not sure if this is going to make any sense but. I need to get the recommended weight range for a person that is 69 inches tall. The weight change is about _ to_ lbs.
According to the graph that they provided (I do not know how to show that graph here). This is what I have, I just cannot find the weights.
25h-7w≤800
5h-w≥170
25(69)-7w=800
H=69
1725-7w=800
-7=-925
Rounded to the nearest integer, the lower limit for the recommended weight for 69 inches is?
Then the second inequality has an equation 5h-w=170 subbing h=69 is
5(69)-w=170
Solve for the upper limit weight
? I�m lost!

Click here to see answer by MathTherapy(10552)

Question 747485: You are planning an anniversary party for your parents. A catering company has been recommended to you by a friend. The company provides you with two pricing options. Option A: $15 per person. Option B: $10. per person plus a flat fee of $120. Write an equation that will represent the cost for each option. Let x represent the number of people attending the party. let c represent the total cost of catering services. For what number of people is the cost the same for both companies?
Click here to see answer by Kg2003(10)

Question 747615: 3x+1=4x-2 how do solve for x?
collect like terms
3x-4x=-2-1
-x=-3
x=3
Click here to see answer by obulee(5)

Question 747697: How do I know that my solution to the equation makes sense?
Equation: (3I-20)+I=500
Solution: I=130
Click here to see answer by mikeebsc(26)

Question 747697: How do I know that my solution to the equation makes sense?
Equation: (3I-20)+I=500
Solution: I=130
Click here to see answer by tommyt3rd(5050)

Question 747771: Predicted log (plasma concentration) = 2.188 - 0.4703 log10 (80 minutes)
= 1.2930
Predicted plasma concentration therefore = 10 to the power of 1.2930 = 19.6
I do not understand how you get the 19.6.
I would be grateful for help with this immediately as have an exam in 2 days time.
Many thanks
David
Click here to see answer by stanbon(75887)

Question 747811: complete ordered pairs so that each is a solution of the given linear equation and graph
x=5+y
x= 0, -3, 5
y = solve

Click here to see answer by Alan3354(69443)

Question 747810: Complete the ordered pairs so that each is a solution of the given linear equation and graph
x=5+y
x = 0, -3, 5
y = find
Click here to see answer by Alan3354(69443)

Question 747871: -2(t-4)=12
Click here to see answer by Alan3354(69443)

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