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

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Question 2271: 6(x+1) = 12(x-3)
then you get
6x+6=12x-36
My question at this point is: How do you know which side to start with. Not sure whether to start with +6 or -36 or 6x or 12x.

Click here to see answer by longjonsilver(2297)

Question 2335: Can you please explain how do the following problem?
If 2x+10=x+2
____ ____
2 10
what is the value of x -1?
P.D.The ______ below the 2x+10 means divided by 2 and same thing x+2 means is divided by 10.

Click here to see answer by longjonsilver(2297)

Question 2273: how do you type square
Click here to see answer by usyim88hk(158)

Question 2263: This is the question: Write the equation 3x-4y=20 in slope intercept form.
Help, thank you
Click here to see answer by usyim88hk(158)

Question 2343: how do you solve this equation when trying to solve for x in terms of r?
x=3x+2r
Click here to see answer by usyim88hk(158)

Question 2354: I'm confused about the whole Slope deal. I dont really understand the equations for it. I know that the equation is y=mx+b but how do you solve a problem that is like 10y - 12x = 8?
Click here to see answer by longjonsilver(2297)

Question 2389: Find the equation of the line that has a slope of -3/4 and passes through the point (1,2)
Click here to see answer by longjonsilver(2297)

Question 2397: Find the equation of the line that contains the point (2,-3) and has slope 2/3.
Click here to see answer by longjonsilver(2297)

Question 2390: Find the equation of the line that passes through the point (2,-1) and is parallel to the line 2x+7y=5
Click here to see answer by longjonsilver(2297)

Question 2391: Find the equation of the line that passes through the point (1,3) and is perpendicular to the line 2x+3y+5=0
Click here to see answer by longjonsilver(2297)

Question 2406: find the equation of the line that contains the points (-2,5) and (3,3)
Click here to see answer by longjonsilver(2297)

Question 2407: Given C(x)=24.41x + 122 and R(x)=27x, what is the marginal cost and the marginal revenue?

Click here to see answer by sarahcwc(1)

Question 2418: Please help with this problem:
3(6s + 12) - (10s -6)=0
Click here to see answer by usyim88hk(158)

Question 2439: whats the answer to 9x-12=3x
Click here to see answer by usyim88hk(158)

Question 2431: A store sold 200 racquets. Some sold for $33 and some sold for $18. The total value of the racquets sold was $4,800. How many racquets sold for $33 and how many sold for $18.
Click here to see answer by gsmani_iyer(201)

Question 2478: A certain linear function is expresed in terms x and y. The graph of the function has a slope of 2/3 and a y-intercept of 3. What is the equation of this function?
Click here to see answer by matthew_sessoms(39)

Question 2490: Find the equation of the line that has a slope of -3/4 and passes through the point (1,2)
Click here to see answer by matthew_sessoms(39)

Question 2506: how do you solve this equation?
1/x-1 + 2/x = x/x-1
Click here to see answer by borzeya(6)

Question 2506: how do you solve this equation?
1/x-1 + 2/x = x/x-1
Click here to see answer by kiru_khandelwal(79)

Question 2548: 4w-1=7(w+2)
Click here to see answer by kiru_khandelwal(79)

Question 2546: Solve the following:
3(9+4a)+2a=7(2-5a)
Click here to see answer by kiru_khandelwal(79)

Question 2581: ok...seems easy, but i dunno get it....solve.
3x=2x+8
Click here to see answer by kiru_khandelwal(79)

Question 2600: Would you please be able to give me a detailed description on how to do this linear quetion?
QUESTION: A rock climber climbs a cliff at a steady rate. She starts at the bottom of the cliff, which is 1200m above sea level. 8minutes into the climb she is 1224m above sea level.
a. Let y=metres above the sea
and x=Climbing time in minutes.
Write the coordinates of the y-intercept.

b. What are the coordinates of another point?

C.How many metres is she climbing per a minute?
D.What is teh equation the describes her height above sea level while she is climbing?
E. She finishes climbing the cliff in 18 minutes. How high is she above sea level?

Thank you so so much if u can help i need detailed exlanations if possible thanks

Click here to see answer by longjonsilver(2297)

Question 2599: What is the equation in standard form y=mx =c

To Y-3x + 1=

AND THEN what is the y-intercept of the equation?
Click here to see answer by longjonsilver(2297)

Question 2599: What is the equation in standard form y=mx =c

To Y-3x + 1=

AND THEN what is the y-intercept of the equation?
Click here to see answer by kiru_khandelwal(79)

Question 2605: How do you solve for y...
90=3y/4
Click here to see answer by kiru_khandelwal(79)

Question 2527: how do you solve r+4/3 = r/5 ? and problems similar to that one?
Click here to see answer by kiru_khandelwal(79)

Question 2536: Find the midpoint of the line segment joining the points (3,7) and (-6,1)
a: (-3/2, 4)
b: (9/2, 3)
c: (-3,6)
d: (-3,4)
e: none of these
Click here to see answer by kiru_khandelwal(79)

Question 2612: How do I write an equation for the line that has a slope and y-intercept of 3?
Also, how do I write an equation for a line that has a y-intercept of -1 and is perpendicular to a line that has a slope of -1?

Thanks for your help!
Click here to see answer by kiru_khandelwal(79)

Question 2616: find the slope of the line going thru (5,-5);(6,2)
Click here to see answer by kiru_khandelwal(79)

Question 2685: Find the equation of the line that passes through points (7,-2) and (5,-1)
Write the equation of the line in slope-intercept form.
I know the the slope intercept for is y = mx +b
Click here to see answer by kiru_khandelwal(79)

Question 2726: im really having a hard time with this...any help would be appreciated.
Find an equation for the line that passes through (1,-4) and has slope -3/4
Click here to see answer by longjonsilver(2297)

Question 2713: I have no idea how to solve this inequality could you please help me? My teacher told us to teach this to ourselves but i have never even seen a problem like it thank you.
this is the problem:
y = 2/3x + 2
y = -x - 3
Click here to see answer by longjonsilver(2297)

Question 2708: X+Y+Z=
plz thnkx
Click here to see answer by longjonsilver(2297)

Question 2775: what is 3(x-4) - 4(x-3) = x+3-(x-2)
Click here to see answer by kiru_khandelwal(79)

Question 2767: what is the cordinates for the graph y=3x-2 and how did you get the cordinates for the slope
Click here to see answer by kiru_khandelwal(79)

Question 2751: Find the equation of the line which passes through the point(-4,2) and is parallel to the verticle line x=5.
The parallel and verticle line x=5 is really thowing me off.
Click here to see answer by kiru_khandelwal(79)

Question 2754: I am studying for my 8th grade algebra final and i dont understand the way that on this linear system 4x+5y = 7
6x-2y = -18
how do i do this x = (7 -5y)/4
Substituting this expression into the second equation:
6(7+5y)/4-2y = -18

and from after that how do i simplify this 6(7+5y)/4-2y = -18
into this (-38)y = -114
I listen in class but i was absent on some very important days and this doesnt make sence
I thank anyone who could help.

GOD BLESS YOU ALL
Click here to see answer by longjonsilver(2297)

Question 2803: 2(2x-1)-14=12-3x
Click here to see answer by sujatha.krishna(11)

Question 2810: Still having problem understanding how answer was arrived at: Can this be simplified:

Question: Find the equation of the line which passes through the point(-4,2) and is parallel to the verticle line x=5.
The parallel and verticle line x=5 is really thowing me off.
Answer by kiru_khandelwal(62): A vertical line means that any point which lies on that line x coordinate is the same and y coordinate varies
In our case the line ix x=5....this means all the points on the line will have x coordinate 5 and y will be variable
If a line is parallel to a vertical line it aslo needs to be vertical. Since this line passes thru (-4,2)...and as earlier said that all the points that lie on the vertical line has same x coordinate...so in this case the eqution will be x=-4

Click here to see answer by kiru_khandelwal(79)

Question 2844: I have an exam coming up and i've completely blanked out. Could you give me an example on how to solve 6x + 9y = 15 ? Thank you so much!
Click here to see answer by xcentaur(357)

Question 2689: Question: Find the equation of the line that passes through points (7,-2) and (5,1)
Write the equation of the line in slope-intercept form.
I know the the slope intercept for is y = mx +b

Click here to see answer by xcentaur(357)

Question 2690: Question: F'ind the equation of the line that passes through the point (6,2) and is perpendicular to the line y=(-1/3)x + 6
Write the equation of the line in standard form with integral coefficients
I know ax + by = c

Click here to see answer by xcentaur(357)

Question 2621: How do i find the slope of the equation and then graph it? This if for my algebra class
Click here to see answer by corby(3)

Question 2719: Solve:
4x-y=-16
Click here to see answer by corby(3)

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