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

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Question 359691: What is the x-intercept of the function 12x - 10y = 4800?
Click here to see answer by Fombitz(13828)

Question 359668: 1. Imagine you are at a gas station filling your tank with gas. The function C(g) represents the cost C of filling up the gas tank with g gallons. Given the equation
a. What does the number 3.03 represent? M = slope
b. Find C(2). C(2) = 3.03(2) = 6.06
c. Find C(9). C(9) = 3.03(9) = 27.27
d. For the average motorist, name one value for g that would be inappropriate for this function’s purpose. Explain why you chose that number.
The inappropriate function would be a negative number such as – 2 because a negative number cannot equal the cost of a gallon of gas
e. If you were to graph C(g), what would be an appropriate domain and range? Explain your reasoning.
Click here to see answer by edjones(7569)

Question 359743: my first qustion is how do you graph the linear equation 3x+y=7
my second question is how do you write an equation for "parallel to x+2=0 with x-intercept (-1,0)" in a slope intercept form?
Click here to see answer by Fombitz(13828)

Question 359881: Find the equation of a line that is perpendicular to the line x=19 and contains the point (-5, 2)
Click here to see answer by robertb(4012)

Question 359893: what are the x and y intercepts for 3x-5y=-45
Click here to see answer by robertb(4012)

Question 359893: what are the x and y intercepts for 3x-5y=-45
Click here to see answer by jim_thompson5910(28717)

Question 359914: I need to find the equation of a line through (-5,4) and parallel to -6x+4y=-7
The equation needs to be written in standard form.
I have tried to work several versions of this problem and get them wrong each time. I have problems half way through it, due to the fractions. My book is not clear enough.
Thank you
Click here to see answer by mananth(12270)

Question 359922: Find the intercepts and use them to graph the equation y=x^2-9
Click here to see answer by nyc_function(2733)

Question 359826: What is an equation for a line that passes through the origin and is parallel to the line 2x-y=5?
Click here to see answer by ankor@dixie-net.com(15746)

Question 359946: Find the equation of the line that contains the point (-1,-9) and has a slope that is undefined.
Click here to see answer by stanbon(57982)

Question 359972: graph 4x=6y=8
Click here to see answer by nyc_function(2733)

Question 359975: what is the average rate change of the fuction over each interval. f(x)=2+cost A [0, pi] B [-pi,pi]
Click here to see answer by Fombitz(13828)

Question 359968: whats the answer to y=3x-7 and 3x-y=7
Click here to see answer by nyc_function(2733)

Question 359968: whats the answer to y=3x-7 and 3x-y=7
Click here to see answer by Fombitz(13828)

Question 359992: How do I find the linear equation of a line. This is 8th grade algebra.
Click here to see answer by scott8148(6628)

Question 360032: find the value of k so that the two given lines will be parallel: (k+2)x-5y=8 and kx+3y=9.
Click here to see answer by robertb(4012)

Question 360024: Graph the line with the slope of -4/3 that passes through the points(5,4) Then find the equation
Click here to see answer by mananth(12270)

Question 360039: find values of A and B so that the graph of the given equation will contain the
give points: Ax+By=3;(8,3)and(13,7)
Click here to see answer by Jk22(389)

Question 360076: Hello,
I would like to know the steps in solving the following type of problem:
Solving a system by Substitution:
y=3x
2x+3y=22
You are asked to solve the system by using the substitution method
Click here to see answer by vleith(2825)

Question 360134: 3x-6=2y
If x is 8, what point (ordered pair), satisfies the equation?

Click here to see answer by ewatrrr(10682)

Question 360138: Find the slope of the line between the two points, (3,5) and (6,-2). Please show all steps.
Click here to see answer by ewatrrr(10682)

Question 360144: What is the y-intercept of the line 2y=3x-6?
Click here to see answer by ewatrrr(10682)

Question 360149: What is the x-intercept of the line 2y=3x-6?
Click here to see answer by ewatrrr(10682)

Question 360268: My question is a word problem, Part of the proceeds from a garage sale was $280 worth of $5 and $10 bills. If there was 20 more $5 than $10 bills find the numbers of each denomination.
Click here to see answer by mananth(12270)

Question 360269: Determine the slope and y-intercept of the following equation:
2x + 3y = 5
Click here to see answer by rfer(12730)

Question 360328: find an equation of the line having the given slope and containing the given point
m=9,(8,1)
Click here to see answer by mananth(12270)

Question 360316: The width of a rectangular lot is 75% of its length. If the perimeter is 700 meters, then what are the length and width?

Click here to see answer by mananth(12270)

Question 360410: Find the coordinates of the vertices for:
y=8-4x
y=5-x
y=x-2
Click here to see answer by Edwin McCravy(8999)

Question 360476: Find "k" if the line 3x+ky=5 is parallel to the line 2x-7x=4.
Click here to see answer by ewatrrr(10682)

Question 360551: What is the equation of a line with points (3,4) and (11,18). After that I need the intersection of that line and line y=-3/2x +12. Thank you.
Click here to see answer by nerdybill(7009)

Question 360575: Find the amount of a 6% acid solution and the amount of a 14% acid solution that should be combined to prepare 50cc of a 12% solution.
I believe the equation is set up this way:
1st 6% = .06x
2nd 14% = .14y
mix 12% = .12(50)
x + y = 50
.06x + .14y = 6
Then subtract .14y from both sides, then multiply both by 100?
Am I on the right track, because I am way off on the correct answer.
Thanks in advance!
Click here to see answer by Alan3354(31537)

Question 360482: Find "k" if the line 3x+ky=5 is parallel to the line 2x-7y=4.
Click here to see answer by ankor@dixie-net.com(15746)

Question 360598: 18x+3y=-162 find the slope
Click here to see answer by rfer(12730)

Question 360604: In problem 25-28 write the equation and sketch the graph of each line with the given the slope and y-intercept.
25 Slope 1/2 and Y-intercept 3
26 Slope 2 and Y-intercept 3
27 Slope -2 and Y-intercept 1/2
28 Slope 2/3 and Y-intercept -1
Click here to see answer by Fombitz(13828)

Question 360650: How do you graph this problem, on a seperate axis?
2x-5y=10
Click here to see answer by stanbon(57982)

Question 360668: x-15=12 how do i solve this?
Click here to see answer by mananth(12270)

Question 360727: write an equation of a line with m= -5 b=-8??
Click here to see answer by jim_thompson5910(28717)

Question 360808: graph the equation using the slope and y-intercept
y=5/3x+8
Click here to see answer by ewatrrr(10682)

Question 360845: There are seven questions that I am having trouble answering and would like some help on these if possible.
1- Find the slope and the y-intercept for y=2.3x-3
2- Find an equation of the line containing the given pair of points:
(-6,0) and (0,5)
3- Write an equation of the line containing the given point and parallel to the given line.
(6,-2); 3x-4y=5
4- Find the function value for f(x)=x^3(that is x to the 3rd power)f(-5)=?
5- Find the slope if it exists, of the line containing the pair of points.
(5,8) and (10,-6)
**the 2 choices I have to answer from are
1- the slope is undefined
2- the slope m = ?
6- Find the slope and the yintercept of the line. Write fractional answers in the lowest term.
6y+9x+7=12+9x
7- Determine whether the graphs of each pair of lines are parallel.
4x+6=y
2y=8x-5
thanks for any help on these!
Click here to see answer by edjones(7569)

Question 360922: hi please help solve this equation
(2-3) ,m=2

Click here to see answer by rfer(12730)

Question 360922: hi please help solve this equation
(2-3) ,m=2

Click here to see answer by ewatrrr(10682)

Question 360945: hi

please help me with this equation how i can solve (0-2) m=4

Click here to see answer by rfer(12730)

Question 360928: what the slope if it exists, of each of these lines.

x=-8
Click here to see answer by rfer(12730)

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