Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

Tutors Answer Your Questions about Graphs (FREE)

Question 27049: 4.
Write the equation of the line that passes through point (�5, �17) with a slope of 2.

Click here to see answer by mbarugel(146)

Question 27055: 10.
Write the equation of the line with slope 8 and y-intercept (0, �6).

Click here to see answer by mbarugel(146)

Question 27060: 18.
Find the slope of the line passing through the points (15, 6) and (10, 1).

Click here to see answer by venugopalramana(3286)

Question 27056: 12.
The equation y = 10x � 70 describes the amount of money a class of students might earn from candy bar sales. What are the slope and y-intercept of this line?

Click here to see answer by venugopalramana(3286)

Question 27052: 7.
If y varies directly with x, and y = 1020 when x = 600, find the constant of variation k.

Click here to see answer by venugopalramana(3286)

Question 27117: It is approximately 480 miles from Los Angeles, California, to San Francisco, California. Allowing for various traffic conditions, a driver can average approximately 60 miles per hour.
a)Write a linear function that expresses the distance traveled, d, as a function of time, t.
b)How far have you traveled after 4 hours?
c)Write a linear function that expresses the distance to be traveled to reach San Francisco, s, as a function of time, t.
d)How far will I need to travel to reach San Francisco after I have traveled 3 hours?

Click here to see answer by venugopalramana(3286)

Question 27094: 3) It is approximately 480 miles from Los Angeles, California, to San Francisco, California. Allowing for various traffic conditions, a driver can average approximately 60 miles per hour.
a) Write a linear function that expresses the distance traveled, d, as a function of time, t.

b) How far have you traveled after 4 hours?

c) Write a linear function that expresses the distance to be traveled to reach San Francisco, s, as a function of time, t.

d) How far will I need to travel to reach San Francisco after I have traveled 3 hours?

Click here to see answer by venugopalramana(3286)

Question 27107: Here is the question on my quiz sheet-
Find the slopes of the lines that are (a) parallel and (b) perpendicular to the line through the pair of points
(-3,-3) and (2, 2)
x1 y1 x2 y2 (so you see what i did)
The possible answers are -1;1, 0;0, 1;-1, -3/2; 2/3 I chose -1;1
I got -1 by taking 2-3 (y2-y1)=-1 and 2-3 (x2-x1)=-1 but I do not know how to find perpendicular or if I am even doing this problem correctly to begin with. I am having a very hard time period with graphing. Thank you so much for any help that you can give me so that I understand (or try to) what exactly I am supposed to be doing. If I can understand how this problem works then I should be able to figure out how the other one is figured out on my quiz. thanks again...Angi
Click here to see answer by elima(1433)

Question 27178: 12. The equation y = 10x � 70 describes the amount of money a class of students might earn from candy bar sales. What are the slope and y-intercept of this line?
Click here to see answer by josmiceli(19441)

Question 27182: 21. Write the equation of the line passing through (2, �2) and (�4, �2).
Click here to see answer by josmiceli(19441)

Question 27181: 17. Which of the ordered pairs
(�3, 1), (1, 0), (�11, �3), (�27, 7)
are solutions for the equation x + 4y = 1?
Click here to see answer by josmiceli(19441)

Question 27185: 25. Are the following lines parallel, perpendicular, or neither?
L1 with equation x � 3y = 12
L2 with equation 3x + y = 3

Click here to see answer by rodriguezh2(15)

Question 27184: 23. Determine which two equations represent perpendicular lines.
(a) y = 4/5x � 4
(b) y = 4x � 4/5
(c) y = -1/4x + 4/5
(d) y = 1/4x

Click here to see answer by rodriguezh2(15)

Question 27179: 13. Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = �3x + 1. Write the equation in slope-intercept form.
Click here to see answer by rodriguezh2(15)

Question 27191: 5x + 7y = 19 find three solutions

Click here to see answer by JayJay_T(6)

Question 27227: How do you write an equation of the line with slope m that passes through the given point? m= 4, (1,3)
Click here to see answer by rodriguezh2(15)

Question 27290: how to slove this 2x+4<10
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27335: What is perpendicular to y=4x-7 through (5,-1)
Click here to see answer by rodriguezh2(15)

Question 27401: Rewrite each equation as a function of x.
18. -3x + 4y = 11

Click here to see answer by Eric Johnston(7)

Question 26676: I have tried this story problem multiple times and I keep getting it wrong could someone help me??????

The grades for an algebra class are weighed so that test are 45% of the grade, quizzes are 25%, homework is 20%, and projects are 10% of the grade. MAke a circle graph of the data.
I got p/360= 45/100= 162
p/360= 25/100= 90
p/360= 20/100= 72
p/360= 10/100= 36
I am stumped??????
Click here to see answer by venugopalramana(3286)

Question 27403: If f (x) = 4x - 3, find the following:
30. f (-1)
Click here to see answer by whty89(20)

Question 27399: 38. Number problems. You have at least $30 in change in your drawer, consisting of dimes and quarters. Write an inequality that shows the different number of coins in your drawer.
Click here to see answer by stanbon(75887)

Question 27402: Graph the functions.
22. f (x)= -2x - 5
Click here to see answer by prabhjyot(165)

Question 27448: write the equations for 2 lines that intersect at the point (1,0). explain how you know the answer is correct.
Click here to see answer by AnlytcPhil(1806)

Question 27532: i dont get this, can someone please help me???:
Find the slope of each line.
1. (on a graph, there is...)
(-2,2) and (3,-1)
Click here to see answer by Earlsdon(6294)

Question 27548: Please help me write the slope-intercept form of the line that passes through the given point and is perpendicular to the graph of each equasion.
(-3,-2),y=x+2
Click here to see answer by venugopalramana(3286)

Question 27536: Can some1 please help me? i need my math done before 8:00pm tonight, and i really do not get it at all. please help...
Find the slope of each line.
(on a graph).. (-3,4) and (0,4)
---------i really do not understand how to do these, everytime i try, i get them all way off the correct answer, ... this is way too confuzing!!-----------
Click here to see answer by longjonsilver(2297)

Question 27650: i would like to know how to do the following problems:
-3(3x-2)_>-4(2x-3)

Click here to see answer by longjonsilver(2297)

Question 27605: PLEASE EXPLAIN INTERSEPTS TO ME. I AM TRYING TO HELP MY SON WITH HIS PRE-ALGEBRA AND AM HAVING A HARD TIME TRYING TO FIGURE IT OUT MYSELF. I WOULD APPRECIATE ANY HELP I CAN GET. THANKS- CRAZY MOM
Click here to see answer by venugopalramana(3286)

Question 26858: Geometry. Floor plans for a building have the four corners of a room located at the points (2, 3), (11, 6), (-3, 18), and (8, 21). Determine whether the side through the points (2, 3) and (11, 6) is parallel to the side through the points (-3, 18) and (8, 21).

Geometry. For the floor plans given in exercise the first exersize determine whether the side through the points (2, 3) and (11, 6) is perpendicular to the side through the points(2, 3) and (-3, 18).
Click here to see answer by venugopalramana(3286)

Question 26857: Find the slope of any line perpendicular to the line through points (0, 5) and
(-3, -4).
Click here to see answer by venugopalramana(3286)

Question 27694: I have to put this equation y=x^2-2x-15 into this form y=a(x-h)^2+k. I have to find the line of symmetry. (h,k)=vertex I think you use complete the square technique. Please help. thanks
Click here to see answer by venugopalramana(3286)

Question 27761: what would the slope of the line be through the two points (-4,-2) and (-1,-1)
I do not understand this could someone please help???

Click here to see answer by Earlsdon(6294)

Question 27808: I need help using the substitution method so can you help me solve this problem:
3x+5y=-3
-3x+y=-15
I also need help using the combination method so maybe with these too:
1) 4x+5y=-2
5x=5-10y
2) 3y=16-2x
5x+2y=14
Last question is on graphing inequalities, i think:
4x+3y (is less then or equal to) 13
-3x+4y>9
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27804: How would you graph x-2y=6? Plot five points for each equation.
Click here to see answer by bmauger(101)

Question 27843: graph each equation using a graphing calculator. make a sketch of the graph. include the Xmin, Xmax, Ymin, Ymax, and the x and y-intercepts.
4x+5y=80
Click here to see answer by bmauger(101)

Question 27856: Which of the following describes the graph of the solutions to the system
{ 2x-4y=-1
x-2y=2
I dont know if its two parallel lines, no solutions OR one line, infinately many solutions?
Thanks a bunch!
Click here to see answer by bmauger(101)

Question 27830: graph this equation. x + 4y = 5. Plot at least 5 points.
Click here to see answer by elima(1433)

Question 27841: How would I go about solving a problem such as this? They want me to graph each system of linear equations to find its solution.
x-5y=-30
2x-y=3
Click here to see answer by Earlsdon(6294)

Question 27889: 12. Solve each of the following systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
2x + 3y = 1
5x + 3y = 16
Click here to see answer by AnlytcPhil(1806)

Question 27881: Tell what you must do the first inequality in order to get second. Be sure to list all the steps.show me how to Solve it
1.)4j+5>=23;j>=4.5

2.) 2(q-3)<8;q<7

3.) 8-4s>16;-4s>8

4.) -8>z/-5-2;30

5.) 2y-5>9+y;y>14

6.) 2/3g+7>=9;2/3g>=2]

7.) 6<12-s;s<6

8.) 3+5t>=6(t-1)-t;3>=-6

9.) 6.2<-r;-6.2>r

Solve it and graph it

10.) 2x-2>4

11.) 2-2x>4

12.) 2x+2>4

13.) 2x+2>4x

14.) -2x-2>4

15.) -2(x-2)>4

Solve each inequality. Graph the solutions on a number line.
17.) 5<=11+3h

18.) 3(y-5)>6

19.) -4x-2<8

20.) r+6+3r>=15-2r

21.) 5-2n<=3-n

22.) 3(2v-4)<=2(3v-6)

23.) 2(m-8)-3m<-8

24.) -(6b-2)>0

25.) 7a-(9a+1)>5

pls send me the answer and how to do it really quickly
Click here to see answer by sdmmadam@yahoo.com(530)

Question 27907: I just can not figure out how this is done, can you please help??
Evaluate each function for the value specified:
f(x) = x2 � 7 x + 10; find (a) f(0), (b)f(5), and (c) f(-2)
Click here to see answer by bmauger(101)

Question 28048: can you help me find the equation of the vertical line through (6,5)
Click here to see answer by Earlsdon(6294)

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