Tutors Answer Your Questions about Linear-equations (FREE)
Question 720003: There is this question on my homework and it says: write and equation in standard form of the line that passes through (7,2) and has a y- intercept of -4
I know that standard form is Ax=By=C and i'm thinking that you would make it (7,2) (0,4) and then it would go into Y2-Y1/X2-X1 form. And end up with -6/-7 and now I and don't know what to do from here.
Click here to see answer by Alan3354(69443)  |
Question 720248: solve system of equation using substitution
3x-y=-10
x=2y-10
my attempt
we already now what x is
now substitute to solve for y
3(2y-10)=-10
6y-30=-10
+30 +30 6y=20 divide by 6 y =3.3333 i dont think this is right and I dont now what to do next
thanks
Click here to see answer by lynnlo(4176) |
Question 720636: A car travels a distance of 9000 KM with a certain average speed. If after travelling half the distance the average speed of the car be increased by 15 Km/Hrs., the time required to travel 900 Km, is reduces by 11/2 hour, find the original average speed of the car.
Click here to see answer by mananth(16946)  |
Question 720652: Find three solutions of the equation. y= 2x-6
A.(–2, –10), (1, –4), (2, –1)
B.(–2, –10), (1, –4), (0, –6)
C.(0, –6), (3, –2), (–2, –10)
D.(1, –4), (0, –6), (–1, –9)
Click here to see answer by MathLover1(20849)  |
Question 720834: I need help with the following question,
What is the solution set of the following system of equations?
5x - 3y - 10 = 0
x + y - 7 = 0
The answer has to be one of the following,
1. {(31/8, 25/8)}
2. {(25/8, 31/8)}
3. {(45/2, 31/2)}
4. {(31/2, 45/2)}
I have tries combining them,
5x - 3y - 10=0
++++++++++++++
x + y - 7 =0
into 6x - 2y -17 = 0
6x - 2y -17 = 0
+2y +2y
6x - 17 = 2y
That's where I get lost.
-Thank you
Click here to see answer by stanbon(75887) |
Question 720988: my math teacher wants me to write the slope and y/x intercepts for a line but while i did find the slope the line crosses neither the x or y axis several lines are like this and I am thourghly stumped please help
Click here to see answer by Alan3354(69443)  |
Question 721124: Nielsen media research surveys tv watching habits and provides a list of the 20 most watched TV programs each week. each rating point in the survey represents 1102000 households. one week 60 minutes had rating of 11.0. how many households did this represent?
Click here to see answer by stanbon(75887) |
Question 721159: Good morining everyone,I would really appreciate your help if some of you would answer these questions for me (;
Find midpoint and the length of the line of:
(2,8)(6,14)
(1,7)(7,9)
(3,12)(6,4)
(-2,8)(2,18)
(-6,-2)(2,-10)
Cheers :)
Click here to see answer by mananth(16946)  |
Question 721248: 1. what is the y-intercept of the linear equation y= -3x?
2. what is the slope of the equation y= -4?
3. rearrange x + y= 4 into slope-intercept,and identify the slope and y-intercept?
4. given a slope of 5/3 and a y-intercept of 3, write the equation of the line in y= mx+b?
5. Name one point(other than the y-intercept) that is on the line with the given equation?
Click here to see answer by stanbon(75887) |
Question 721258: 1. Name one point(other than the y-intercept) that is on the line with the given equation y= -2x + 8?
2. What is the y-intercept of the line with an equation of -2x + 5y - 10=0?
3. write the slope-intercept form of 8x + 4y=32?
4. Find the slope given the ordered pairs (3,-2), (12,10)?
5. The slope of the linear equation 4x + 2y=10?
6. sketch the graph of the equation y= 3/5x - 2?
Click here to see answer by lynnlo(4176) |
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