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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 35955: I am not sure how to use the x-intercept and the y-intercept to gragh this equation, y= x+1
Click here to see answer by checkley71(8403)

Question 36037: Please show me where the x-intercept and y-intercept are located in the provided problem:
3x-y=3
Thank you for your attention
Click here to see answer by rapaljer(4667)

Question 36117: My pre-algebra teacher,Mrs.Sanders, assigned a worksheet called Linear Equations and Inequalities.Then below that it says system of Equations: Substitution Method.
The example is as follows;
x-5y=10
-2x=y=7 then arrow points over y=2x=7
x-5(2x+7)=10
x-10x-35=10
-9x-35=10
-9x=45
x=-5 then it says th solutionis (-5,-3)
And I have no idea how they got this,so can you help me out?
Click here to see answer by qwe123a(7)

Question 36114: one question please
when graphing a linear inequality how do we know if the inequality represents the area above the line.
Click here to see answer by ilana(307)

Question 35160: Hi,
Could someone please answer this. Thanks
Which system(s) of equation has no solution?
1. y = 3x - 1 and y = -3x +1
2. y = 1.5x-2 and y = 3/2x + 2
3. x+y = 1 and y = -x +3
4. 2x + y = 4 and 2y = 4x + 2
Click here to see answer by stanbon(57387)

Question 36204: Thank you so much for your time.
log2(log2(x))=1

Click here to see answer by stanbon(57387)

Question 36257: Can someone help me?
Find the equation of the line, in slope-intercept form, of the line that passes through the point (1,4) with slope 3.
Click here to see answer by Prithwis(166)

Question 36259: What is the slope of the line parallel to the line 4x+y=7?
Help, I haven't done this in forever!
Click here to see answer by checkley71(8403)

Question 36301: y=x-9 (7,10) find the point for a slope
Click here to see answer by checkley71(8403)

Question 36388: Write the standard form of the equation of the line with slope -4 passing through the point (2,-5). Can some help
Click here to see answer by Prithwis(166)

Question 36387: A line goes through the point (3,4) and has slope 3/5, Graph this line.
Can someone help!
Click here to see answer by rapaljer(4667)

Question 36593: Why is it true that any two points satisfying a linear equation will give you the same graph for the line represented by the equation?
Please Help
Click here to see answer by venugopalramana(3286)

Question 36729: Jill has $3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have?
Click here to see answer by checkley71(8403)

Question 36734: . Solve the following system by substitution.
4x – 12y = 5
-x + 3y = -1

Click here to see answer by Cintchr(481)

Question 36733: . Solve the following system by substitution.
8x – 4y = 16
y = 2x - 4

Click here to see answer by Cintchr(481)

Question 36732: . Solve the following system by substitution.
5x – 2y = -5
y – 5x = 3

Click here to see answer by Cintchr(481)

Question 36735: . A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100 lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture?
Click here to see answer by venugopalramana(3286)

Question 36730: A coffee merchant has coffee beans that sell for $9 per pound and $12 per pound. The two types are to be mixed to create 100 lb of a mixture that will sell for $11.25 per pound. How much of each type of bean should be used in the mixture?
Click here to see answer by venugopalramana(3286)

Question 36726: Find values for m and b in the following system so that the solution to the system is (-3,4).
5x + 7y = b
mx + y = 22
Click here to see answer by venugopalramana(3286)

Question 36736: Solve the following system by using either addition or substitution. If a unique solution
does not exist, state whether the system is dependent or inconsistent.
10x + 2y = 7
y = -5x + 3
Click here to see answer by venugopalramana(3286)

Question 36728: . Solve the following system by addition. If a unique solution does not exist, state
whether the system is inconsistent or dependent.
x + 5y = 10
-2x – 10y = -20
Click here to see answer by venugopalramana(3286)

Question 36727: . Solve the following system by addition. If a unique solution does not exist, state
whether the system is inconsistent or dependent.
2x + 3y = 1
5x + 3y = 16
Click here to see answer by venugopalramana(3286)

Question 36890: (2,-1)m=3
Click here to see answer by checkley71(8403)

Question 36939: A movie theater charges $8.00 for adults, $4.50 for children, and $6.00 for senior citizens. On one day 405 tickets were sold for a total $2320.00. If there are twice as many children tickets as adult tickets, then how many of each group were sold?
Click here to see answer by checkley71(8403)

Question 37043: 3(x-2)=8
Click here to see answer by checkley71(8403)

Question 37046: by looking at two linear equations, how can you tell that the corresponding lines are paralell?
Thank YOu
Click here to see answer by stanbon(57387)

Question 37059: Write an equation of the line that passes through the given point and has the givent slope. Use the equation to find two other points on the line. Check your solutions.
(-2,2); m = 3
Click here to see answer by checkley71(8403)

Question 37111: Please help me solve this problem.
-3/8 < -1/4x + 1/8 < 5/8
Click here to see answer by AnlytcPhil(1277)

Question 37096: Determine the points of intersection using algebra.Check using graphing and substituition......a..3x=y-1=0,2x=y-6
Click here to see answer by checkley71(8403)

Question 37088: Write the equation of a line parallel to the x-axis and passing through (-8,6)
i just know y=mx+b.. and i dont know where to go from there. thanks
Click here to see answer by checkley71(8403)

Question 37120: When a number is subtWhen a number is decresed by 3 and the reult is doubled the answer is equal to the original number. Find the number.
Click here to see answer by vidhyak(94)

Question 37187: could you explane to me why i got this marked wrong and how i can correct it?
here's what they asked: "find the equation of a line that passes through the origin and the following points." (2,-2)
my answer: y-(-2)=0(x-2)
:) thanx a bunch!!
Click here to see answer by fractalier(2101)

Question 37131: Find the slope of the line through given points.
(3,1) and (5,8)
Click here to see answer by fractalier(2101)

Question 37089: Please help:
-3/8<-1/4x+1/8<5/8
Click here to see answer by fractalier(2101)

Question 37126: 1/2t-3=1/4t-9
Click here to see answer by fractalier(2101)

Question 37189: it's me again... not sure as to what i did wrong on this one.
the directions are to give the coordinates of the point where each line crosses the y-axis. y = -3x
my answer: (-3,0) (o,1) do you mind helping with this one? thanx!! :)
Click here to see answer by fractalier(2101)

Question 37076: -1/3 < -1/4x + 1/8 < 5/8
Click here to see answer by fractalier(2101)

Question 37193: x/3 - y/2 = - 10/3
I Need Help With This Elimination Method Problem Involving Fractions. Fractions Confuse me. Fractions are Not My friend!!!!!!!!!!!!!
Click here to see answer by fractalier(2101)

Question 37041: LIghthouse - Height(feet)
----------------------------
Currituck - 162
Bodie Island - 165
Ocracoke - 65
Cape Hattress - 193
Cape Lookout -165
***What is the interquartile range?
Click here to see answer by fractalier(2101)

Question 37249: I need help solving this problem. I am confused on where to begin. The problem is 3x=6x+27. How would I go about solving this. I am horrible in Math and need your help. It is greatly appreciated.
Click here to see answer by stanbon(57387)

Question 37210: Find the slope of a line perpendicular to a line with the given slope.
3
--
4

A step-by-step answer on how you did it would be great, I'm having trouble understanding it.
Click here to see answer by stanbon(57387)

Question 37207: Write the equation of the line L satisfying the given geometric conditions.
L has y-intercept (0,2) and is perpendicular to the line with equation 2x-3y=6
I am able to solve this style of equation when the line is parallel and when the y variable is already by itself. I can't seem to figure this one out. Help, please!

Click here to see answer by Nate(3500)

Question 37259: Find the slope from the following pairs of points:
(5,-2)&(9,2) (1,-5)&(3,1) (0,6)&(2,6)
Click here to see answer by checkley71(8403)

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