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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 642723: 4x + 2y = -10
2x + 3y = 33
I can't get this to proof check.
Click here to see answer by MathLover1(6638)

Question 642710: Find k such that 4ky - 2x +3 -k = 0 passes through the point (3, 4).
Click here to see answer by KMST(1870)

Question 642766: What is the equations in slope intercept form for the line that contains (1,1) and (3,5)
Click here to see answer by lenny460(775)

Question 642894: how would i graph 6x+1y=0? i got 0 for both my x,y intercepts but every time i graph it (on the computer)i only put a dot for the line on the axis because both my x,y= 0 it tells me that im incorrect and im almost positive im right! but i may be doing something incorrect please help!
Click here to see answer by Alan3354(30993)

Question 642885: Find an equation of the vertical line that passes through
(x, y) = (20, 1).
Click here to see answer by Alan3354(30993)

Question 642896:
Click here to see answer by Alan3354(30993)

Question 643009: This is suppose to be all one question. I have submitted this 3 times and I can't figure out what I am doing wrong. Please help!?!?!
If you can help please email me and I will send you a copy of the graph. It won't allow me to post it.
a. Find the domain of f.
b. Find the range of f.
c. Got this one right.
d. Find the y-intercept.
e. Find the intervals over which f is increasing.
f. Find the intervals over which f is decreasing.
g. Find the intervals over which f is constant.
h. Find any points of discontinuity.
Click here to see answer by Alan3354(30993)

Question 643043: Can you please hep me solve this problem. Its part of my summer math packet and i can't figure it out. the problem is : Sean collects nickels and dimes. Every time he places a nickel into his collection, he places two dimes. After a week, he notices that the number of dimes, increased by twice the number of nickels, gives the same number of coins as three times the number of nickels, increased by 10. How many coins does he have by the end of the week?
Ive tried over and over again but i keep getting confused thank you for your help.
Jasdeep Kaur

Click here to see answer by stanbon(57387)

Question 642708: Find k such that ky + 2y + x +7 = 0 is a vertical line.
Click here to see answer by Century(7)

Question 643298: I need help with this question it is on my homework and I have never done this kind of problem before c/2-5=11.
Thank you for your time,
Hannah
Click here to see answer by Edwin McCravy(8909)

Question 643537: Ths pertains to a previous question:
A scientist is studying the number of a certain type of bird in his state. He is sure that the number of birds is related to the number of green slugs found in the area which is the bird's favorite prey. After counting both slugs and birds in several areas he finds a linear relationship: Number birds = 0.0035 X (Number of slugs). What does the slope of the line equal?
So the slope is the m=0.0035. What does the y-intercept equal? Or is it unknown? Don't we substitute x=0? to solve for b? The answer choices given were 1 - number of birds, 2 - 0.0035 3-Number of slugs or 4-none of the above?
Click here to see answer by solver91311(16897)

Question 643574: How is this equation simplified : 6-2(x-3)+7

Click here to see answer by jim_thompson5910(28598)

Question 643567: 3 - 2y = 16
Find the slope
Click here to see answer by lynnlo(4164)

Question 643567: 3 - 2y = 16
Find the slope
Click here to see answer by Alan3354(30993)

Question 643668: I need help with doing the Pythagorean Theorem with coordinates.
Click here to see answer by solver91311(16897)

Question 643629: how do you do the equation 6y-11=-2y-5
Click here to see answer by asuar010(324)

Question 643701: How do you write in standard form an equation of the line with the given slope through the given point?
Ex. slope = -4; (2,2)
Click here to see answer by josmiceli(9697)

Question 643762: given the slope of the line segment and the other point, determine the unknown
(7,12), (12,d), slope 6
Click here to see answer by stanbon(57387)

Question 643878: write slop intercept form
Click here to see answer by MathLover1(6638)

Question 644067: The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May her driving cost was $350 for 420 mi and in June her cost was $470 for 900 mi. Assume that there is a linear relationship between the monthly cost C of driving a car and the distance driven d.
(a) Find a linear equation that relates C and d.
Click here to see answer by josmiceli(9697)

Question 644029: write the standart equation the line that passes through (3, -7) and is perpendicular to the line with equation y=3x-5
Click here to see answer by MathLover1(6638)

Question 644146: one pipe can fill a pool 1.25 times faster than a second pipe . When both pipes are opened , they fill the pool in five hours . How long would it take to fill the pool if only the slower pipe is used ? tanx

Click here to see answer by DrBeeee(378)

Question 644197: A second rental company trusty car rentals charges $25 daily to rent a compact car plus a mileage rate of 0.47 per mile?
Click here to see answer by stanbon(57387)

Question 644216: Find an equation of the line satisfying the given conditions:
1.(a)Through the point (1,-7) and parallel to the x-axis;
(b)through the point (2,6)and parallel to the y axis.
Click here to see answer by Alan3354(30993)

Question 644211: Find an equation of the line satisfying the given conditions:
10. (a)The slope is -2 and through the point (-4,3);
(b)through the two points (3,1) and (-5,4)
Click here to see answer by unlockmath(1603)

Question 644241: A chemist has two acid solutions. One contains 15 percent acid and the other contains 6 percent acid. How many cubic centimeters of each solution should be used to obtain 400cm3 of a solution that is 9 percent acid?
Click here to see answer by stanbon(57387)

Question 644246: If a girl works for 8 min. and her brother works for 15 min, they can wash the front windows of their house. Also, if the girl works for 12 min and her brother works for 10 min, they can wash the same windows. How long will it take each person alone to wash the windows? (Hint: If it takes t minutes for a person to do a job alone, then in 1 min, the person can do 1/t of the job).
Click here to see answer by stanbon(57387)

Question 644217: Find the Slope and y intercept of the line having the given equation, and draw a sketch of the line.
1. (a)7x-8y=0; (b)x=6-2y
Click here to see answer by lynnlo(4164)

Question 644239: A group of women decided to contribute equal amounts toward obtaining a speaker for a book review. If there were 10 more women, each would have paid $2 less. However, if there were 5 less women, each would have paid $2 more. How many women were in the group and how much was the speaker paid?
Click here to see answer by DrBeeee(378)

Question 644321: 3(x-2)+7=2(x+5)
Click here to see answer by jim_thompson5910(28598)

Question 644361: I am not sure if this is the correct category. But please help me solve this.
This is the question: Graph the equation using the most appropriate method. Be sure to include key points.
F(x)=
I'm not really sure how to get the points from this equation.
Click here to see answer by stanbon(57387)

Question 644452: in 1980, the median family income was 18,000 and in 2000 it was 41,000 I need to know what the m= and what would be the median family income 2002
Click here to see answer by stanbon(57387)

Question 644451: x/(x^2-9)+4/(x+3)=3/(x^2-9)
Click here to see answer by stanbon(57387)

Question 644450: the distance between 2 stations is 300 km.Two motorcyclists start simultaneously from these stations and move towards each other.The speed of one of them is 7 km/h more than that of the other.If the distance between them after 2 hours of their start is 34 km, find the speed of each motorcyclists.

Click here to see answer by stanbon(57387)

Question 644475: a ski slope drops 30 feet for every horizontal 70 feet. Find the slope.
Click here to see answer by Alan3354(30993)

Question 644554: find the slope of a line parallel to 2x+5y=3

Click here to see answer by jim_thompson5910(28598)

Question 644600: Find the distance between the points (-2,3) and (1,-1).
Click here to see answer by jim_thompson5910(28598)

Question 644605: y=-4x-2
Click here to see answer by jim_thompson5910(28598)

Question 644748: Find an equation of the line that satisfies the given conditions.
Slope 5/3; y-intercept 6
Click here to see answer by jim_thompson5910(28598)

Question 644752: A barrel contains 173 gallons of paint and is being drained at a constant rate of 6 gallons per hour. write an equation that models the number of gallons, G, after T hours
Click here to see answer by colliefan(239)

Question 644833: Find he slope-intercept form of the equation of the line that passes through the points
(-1, 4), (6, 4)
Click here to see answer by Alan3354(30993)

Question 644933: what is slope=3/4 and y-intercept=-2 in slop intercept form?

Click here to see answer by jim_thompson5910(28598)

Question 644941: x+y=5
x+y=6
Solving linear equations by graphing
Click here to see answer by Aaniya(63)

Question 645085: Through (4, 5); perpendicular to the line
y = 5
Click here to see answer by nerdybill(6962)

Question 645085: Through (4, 5); perpendicular to the line
y = 5
Click here to see answer by stanbon(57387)

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