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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 449577: 0.15x + 0.79
0.11y -y = -0.85
question are these paralley or perpendicular
Click here to see answer by rwm(914)

Question 448855: Solve each system graphically.Be sure to check your solution.If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution state this.Can someone help with this problem because I don't understand it?
b+2a=2,
a=-3-b
Click here to see answer by Alan3354(31518)

Question 449566: What type of graph do you get when you multiply a linear graph by a linear graph???
Click here to see answer by ankor@dixie-net.com(15746)

Question 449518: Hi there,
I've been having some trouble understanding the directions to one of the problems in my worksheet:
For Problem's 21-40, first transform the equations so that either the x-coefficients or the y-coefficients are opposite. Then solve by the linear combination method.
I have provided number 21 to use as an example:
3x+5y=17
2x+3y=11
I have tried solving for x by multiplying each equation by the opposite of the x-coefficient. Ex: (2)3x+5y=17
(3)2x+3y=11
I wasn't sure if what I was doing was correct. Can you clarify? Thank you.
Click here to see answer by scott8148(6628)

Question 449765: How would I solve using the multiplication principle?
-4x >1/11
What is the solultion set?
{x|x___ ___}
Click here to see answer by rfer(12730)

Question 449768: How would I identify the y-intercept?
y=3/2x + 4
Click here to see answer by rfer(12730)

Question 449769: Solve using the addition and multiplication principles?
13x - 14< - 66
What is the solution set?
Click here to see answer by rfer(12730)

Question 449770: Find the y-intercept and the x-intercept for the equation.
3x -6y=36

Click here to see answer by rfer(12730)

Question 449776: With the two point, (-4,4) (1,1), would the slop be m=(0,1)?
Click here to see answer by rfer(12730)

Question 449785: How can I graph the equation and indentify the y-intercept?
y=1/5x
Click here to see answer by jorel1380(2518)

Question 449787: Use the intercepts to graph the equation.
3x-9=3y
What are th intercepts?
Click here to see answer by jorel1380(2518)

Question 449877: what would be the slope of y=-2.16x if it exists. Can anyone help. Thanks
Click here to see answer by stanbon(57966)

Question 449877: what would be the slope of y=-2.16x if it exists. Can anyone help. Thanks
Click here to see answer by tinbar(128)

Question 449902: What would be the slope of (-9, 1/2) and (-7, 1/2) if it exists. Thanks sooooo much
Click here to see answer by rwm(914)

Question 449913: What would be the slope of (8,0) and (3, -9). Thanks sooooo much I think that I am getting the understanding of it, but I want to make sure that I have it right.
Click here to see answer by rwm(914)

Question 449956: A toy rocket goes vertically upward with and initial velocity of 96 feet per second. After t seconds, the velocity of the rocket is given by the formula v=96-32t, neglecting air resistance. In how many seconds will the rocket reach it's highest point? (hint at the highest point, v=0)
Click here to see answer by josmiceli(9817)

Question 449953: Another basketball game turned out to be a rout in which the team scored 55 more points than the losing team. If the total number of points in the game was 133 what was the final score?
Click here to see answer by josmiceli(9817)

Question 449955: The combined percent of PET beverage bottles recovered by New York and Oregon amounts to 16%. If New York recovers 6% more, what percent does Oregon recover?
Click here to see answer by stanbon(57966)

Question 450084: will you please answer this question for me
2/3 + 1/4t=1/3=
thanks
Click here to see answer by Alan3354(31518)

Question 450097: Write the slope-intercept equation for the line that passes through (-14, -3) and is perpendicular to -7x – 4y = -4 Please show all of your work.
Click here to see answer by ewatrrr(10682)

Question 450142: I would like to know how to determine if the 2 lines are parallel, perpendicular or neither, how do I apply the formula, I always forget;
4x+8y=16
3x+6y=7
Click here to see answer by ewatrrr(10682)

Question 450270: Bob Brown bought two plots of land for a total of $110,000. On the first plot, he made a profit of 16%. On the second, he lost 4%. His total profit was $9600. How much did he pay for each piece of land?
Please help me understand how to set this up. Thank you so much!!
Click here to see answer by jorel1380(2518)

Question 450316: Solve: 1/3x+9 - 2/x+3 = 2
Click here to see answer by stanbon(57966)

Question 450337: I cant determine if this equation is a linear equation.
xy = 6
Click here to see answer by rfer(12730)

Question 450337: I cant determine if this equation is a linear equation.
xy = 6
Click here to see answer by Alan3354(31518)

Question 450374: graph the equation using the slope and the y-intercept.
y= -8/3x - 6. I need help graphing it. what are the points? there should be three correct?
Click here to see answer by rfer(12730)

Question 450435: what would be the slope of (-16, -10) and (-20, -13)? Thank you so much, I should have this by now but for some reason it is not sticking.
Click here to see answer by mananth(12270)

Question 450483: Can you explain how to do questions like these..
4 + 3c = -5
Please and thank you.
Click here to see answer by edjones(7569)

Question 450553: find the slope-intercept form of a line with slope -3 containing point (8,9).
Click here to see answer by mananth(12270)

Question 450577: Solve the system of equations and express the answer as an ordered
pair of the form (x,y) or write NO SOLUTION if applicable:
x + y = 1
x + y = 3

Click here to see answer by ewatrrr(10682)

Question 450575: Solve the system of equations and express the answer as an ordered
pair of the form (x,y) or write NO SOLUTION if applicable:
x + 2y = 5
2x - 2y = 4

Click here to see answer by ewatrrr(10682)

Question 450574: Use the substitution method to solve the linear system given. Express
the answer as an ordered pair of the form (x,y)
x + y = 5
2x + y = 6

Click here to see answer by ewatrrr(10682)

Question 450235: Find the x and y intercepts and graph the equation plotting the intercepts. Please show all work. 7x-8y=28
Click here to see answer by ewatrrr(10682)

Question 450578: Referring to the figure, match the system of linear inequalities
with its graph.
a. -x + y < 2 b. -x + y > 2
-x + y ≥ -2 x + y ≤ -2
c. -x + y > -2 d. -x + y ≤ 2
x + y ≤ 2 x + y < 2
if u can not see the graph please tell me thank you
Click here to see answer by ewatrrr(10682)

Question 450571: factor the following terms:
y^2-16/25

Click here to see answer by nerdybill(7003)

Question 450579: You are selling tickets for a high school basketball game. Student
tickets cost $3 and general admission tickets cost $5. You sell 350
tickets and collect $1,450. How many student tickets did you sell?

Click here to see answer by ewatrrr(10682)

Question 450554: I think I have my problem solved but would really like to verify my answers before submitting it.
Annual profit in thousands of dollars is given by the function, P(x)=12x-100
where x is the number of items sold in thousands, x greater than or equal to 10.
1 Describe the meaning of the number 12 in the formula. (my answer is 12 is slope?)
2. describe the meaning of the number -100 in the formula. (my answer is y-intercept?)
3. Find the profit for 5 different values of x (my answer 10, 25,30,40,50)
4. (this is where I struggle) graph the prfit function over its given domain (the 10 right?) ue the 5 values calculated in part 3 to construct the graph. (Do I have x and y coordinates? It seems like only x coordinates which are the 5 values calculated?) Am I missing something?
5. Will this pofit function have a maximimum? (my answer no because it is a straight line not a parabola)
Please help me verify my answers and correct me if needed, I don't have anyone to run my answers by so I'm a little worried about turning them in without having them double checked. I really appreciate it! I don't want you to just give me the answer since this is my school but any help would be appreciated! Thanks
Colleen
Click here to see answer by ewatrrr(10682)

Question 450622: I have this homework with 15 questions on them done them all but I'm just a little unconfident that I have done it correctly... any hoo... this is exactly what my teacher wrote down word for word, and I am confused with this.
The per capita consumption (in pounds) of all poultry in the United States is approximated by the function C (X) = 5.28x + 90.36, where X is the number of years since 2001.
Find and interpret C(10). C(10)=
Find and interpret the slope. Slope=
Find and interpret the Y-intercept. Y intercept=
PLEASE HELP ME! AND THANK YOU IN ADVANCE!
Click here to see answer by rwm(914)

Question 450898: Write an equation of the line containing the specified point and parallel to the indicated line.
(−3, 6), y = 7
Click here to see answer by ilana(307)

Question 450919: Write the slope-intercept equation for the line that passes through (-8, -10) and is perpendicular to -8x – 3y = -16
Click here to see answer by mananth(12270)

Question 450918: Write the slope-intercept equation for the line that passes through (-2, 7) and (-7, 12).
Click here to see answer by mananth(12270)

Question 450915: Find the x and y intercepts and graph the equation plotting the intercepts.
-3x-7y=21
Click here to see answer by mananth(12270)

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