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

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Question 571277: You are selling red candy for $2 and blue candy for $1. Each person is asked to sell $10 worth of candy.
1. Write and equation that says the total amount from red candy, x and blue candy, y is EXACTLY equal to $10.... IS THIS RIGHT 2x+1y=10??
2. Rewrite the equation above in slope-intercept form? IS THIS RIGHT y=10-2x???
3. What are 6 combinations of red candy and blue candy that you must sell to meet or exceed the $10 requirement..... IS THIS RIGHT 5,1 5,2 5,3 5,4 5,5 5,6????

Click here to see answer by ankor@dixie-net.com(12684) About Me 

Question 571354: Find the x-intercept and y -intercept of the line given by the equation.
5x+9y=7

Click here to see answer by solver91311(12118) About Me 

Question 571224: How do I write an equation in slope intercept form for the line that passes through (5,6) and is parallel to the line described by 4x - 5y = 20
Click here to see answer by nerdybill(5403) About Me 

Question 571138: I need help solving this word problem...I have been trying for 2 hours.
In 1920, the record for a certain race was 45.4 sec. In 1970, it was 44.4 sec.
Let R(t)=the record in the race and t=the number of years since 1920.
Find a linear function that fits the data
R(t)=
Round to nearest hundredth
What is the predicted record for 2003____sec
What is the predicted record for 2006?
In what year will the predicted record be 43.50 seconds?
Thanks so much!

Click here to see answer by mananth(10541) About Me 

Question 571104: How do you find the slope of 4y= 3(y+2)
Click here to see answer by Maths68(1140) About Me 

Question 571112: Find the line containing P(3,0) and perpendicular to the x-axis.
Find the line containing P(-4,5) and parallel to x-axis.

Click here to see answer by mananth(10541) About Me 

Question 571113: write an equation in slope intercept form of the line that passes through the point and is perpendicular to the graph and given equation .
Through (-2,-4) perpendicular to x-2y=4

Click here to see answer by mananth(10541) About Me 

Question 571097: What is the slope of 3x=4y-2
Click here to see answer by stanbon(48510) About Me 

Question 570956:
Click here to see answer by JBarnum(1826) About Me 

Question 570965: find the slope of a line parallel to y=-2/5=4/5
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Question 570882: I need help with 6 problems, I have been trying to figure them out for 2 days now and have not been able too. Please help, here are the questions.
Find an equation of the line containing the given pair of points.
(1/4, -1/2) and (3/4, 6)
What is the equation of the line? y=
second question
Find an equation of the line having the given slope and containing the given point.
m=6/7, (1, -7)
The equation of the line is Y=
Third question
Find an equation of the line containing the given pair of points.
(-1, -2) and (-4, -6)
The equation of the line in slope-intercept from is y=
Fourth Question
Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b
(-4, 7); 4x=3y+2
The equation of the line is y=
Fifth question
Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b
(5, 7); 5x+y=4
the equation of the line is y=
Sixth question
Write an equation of the line containing the given point and perpendicular to the given line.
(5, -4); 4x+3y=8
The equation of the line is y=
I have no clue how to solve these problems, any help is greatly appreciated.
Thanks again

Click here to see answer by mananth(10541) About Me 

Question 570844: find the equation that passes through the point (2,1) and perpendicular to the line y=5x-3

Click here to see answer by mananth(10541) About Me 

Question 570801: I have several questions like the following that I cannot seem to get the correct answer.
Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b.
(3,6); x+7y=3.
I am missing a step when I try to solve so if I could get a detailed way to solve this that would be great.
Thank you.

Click here to see answer by mananth(10541) About Me 

Question 178986: 3/x = 7/8
7x=3*8
7x=24
x=24/7=3 3/7

Click here to see answer by PaulBeckles(1) About Me 

Question 570770: How would I solve this problem?
p(x)=x^2-2x+7... I have to find the domain of P

Click here to see answer by richard1234(4789) About Me 

Question 570745: Why should we clear fractions when solving linear equations and inequalities? Demonstrate how this is done with an example. Why should we clear decimals when solving linear equations and inequalities? Demonstrate how this is done with an example.
Click here to see answer by richard1234(4789) About Me 

Question 570763: Are the graphs of these two equations perpindicular?
x+2y=5
2x+4y=7
Thanks

Click here to see answer by richard1234(4789) About Me 

Question 570750: 1. Find the slope-intercept equation of the line passing through (-2, -6) which is also
a. parallel to 4x-16y=2
b. perpendicular to 4x-16y=2

Click here to see answer by mananth(10541) About Me 

Question 570585: Pleas help me solve this equation:
If y= -4 when x = 10, find y when x = 5

Click here to see answer by Alan3354(21550) About Me 

Question 570399: Can you help me solve two questions:
Grade 10 method of elimination:
2x+9y=-4
5x-2y=39
______________
Second question is expand simplify and solve:
2(3x-1)-(y+4)=-7
thanks, help is appreciated

Click here to see answer by solver91311(12118) About Me 

Question 570239: what is the slope of -x-2=0
Click here to see answer by jim_thompson5910(21667) About Me 

Question 570124: 28-4y=0
Click here to see answer by nerdybill(5403) About Me 

Question 569897: I need your help solving this using the combination method
2-7x=9y
2y-4x=6
I have tried this
7x-9y=-2
4x-2y=6 but I don't know where or what I did wrong?

Click here to see answer by ankor@dixie-net.com(12684) About Me 

Question 569797: How can I turn 2y+6x=(-14) into slope intercept form and then find the slope and the y-intercept?
Click here to see answer by scott8148(5879) About Me 

Question 569717: Find an equation of the line that satisfies the given conditions of (4,5) and is parallel to the X-Axis
Click here to see answer by JBarnum(1826) About Me 

Question 569621: x-9=-6x+5
Click here to see answer by JBarnum(1826) About Me 

Question 569565: Write a rule for the linear funtction whoes graph has slope m and contains the given point. m=3; (-2,2)
Click here to see answer by ankor@dixie-net.com(12684) About Me 

Question 569429: Write the slope-intercept equation for the line that passes through (-4, 6) and (2, -6). Please show all of your work??
Click here to see answer by stanbon(48510) About Me 

Question 568968: What is System of Linear Equation in Two Variables ?
Click here to see answer by KMST(578) About Me 

Question 569170: I'm lost on linear equations and functions.
word problem: cd case=$35, cds=$20each. Write the linear function for finding the cost, c, of buying a cd case and d cds. I have c=20d + 35. I don't even know where to go with this.

Click here to see answer by stanbon(48510) About Me 

Question 569096: solve the system by graphing 2x+y=-7 & 5x+4y=-13. I How do I solve the problems to get the solutions to graph.
Click here to see answer by Alan3354(21550) About Me 

Question 569061: what is the slope of a line perpendicular to y = 2?
Click here to see answer by josmiceli(6777) About Me 

Question 568948: How would you find the missing numbers in the slopes (x) and (y) and it's (m) ?
1. ( n , 11/2 ) ( - 1/4 , 0 )
m = -22
2. ( 4 , n ) ( 1 , a-b)
m = 2b/3

Click here to see answer by KMST(578) About Me 

Question 569045: What is the equation of the line containing (-6, 5) and having a slope of 2/3?
I think I have the right answer out of 4 choices (I chose 2x - 3y = -27), but I'm not sure how I would have found that without trying the numbers -6 and 5 in the x and y spots of the equation.

Click here to see answer by josmiceli(6777) About Me 

Question 569058: 78=-2(m+3)+m
Click here to see answer by Maths68(1140) About Me 

Question 569051: x/5+9=4
Click here to see answer by jim_thompson5910(21667) About Me 

Question 569035: Write the equation of a line parallel to and passing through (2,1).
Click here to see answer by Alan3354(21550) About Me 

Question 568940: Ok So my question is very simple
X-Y=3
X+Y=7
After I put it in slope intercept form I get
-Y=-X+7
Y=-X+3
Ho do I get rid of that negative Y?

Click here to see answer by Theo(2967) About Me 

Question 568910: A company predicts that it will sell y units of its product if it charges x dollars for it using the formula y=300-2.5x. In whole dollars, how much should the company charge for the product if it wants to sell 175 units.
Click here to see answer by lwsshak3(2915) About Me 

Question 568907: Please asap

Determine whether the graphs of the equations are parallel lines, perpendicular lines, or neither.
3x - 8y = -6
32x + 12y = -6

Click here to see answer by mananth(10541) About Me 

Question 568918: write the equation of a line parallel to 4x+5y=20 and passing through (2,1)
Click here to see answer by mananth(10541) About Me 

Question 568908: Please asap

Find the slope of the line.
3x - 2y = 1

A. -2/3
B. -1/2
C. 3/2
D. -3/2

Click here to see answer by jim_thompson5910(21667) About Me 

Question 568796: What is the slope of each line that has the description given:
y = 3/4x + 7
2x + 4y = 8
5.1476x + 5.1476 = 15
y - 3 = 7/13 (x-4)
y - 7.3591 = 7/13 (x-4.0856)

Click here to see answer by KMST(578) About Me 

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