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

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Algebra: Graphs, graphing equations and inequalities

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Question 67181This question is from textbook algebra 1 california edition
: The gradient of a road is its slope expressed as a percent. What is the slope of a road with a 7% gradient?This question is from textbook algebra 1 california edition

Click here to see answer by josmiceli(3009)

Question 67206: When you are plotting a point does the x or y come first?
Click here to see answer by bam878s(76)

Question 67206: When you are plotting a point does the x or y come first?
Click here to see answer by funmath(2873)

Question 67193: I don't get it at all, I don't understand how they work...Can you help me understand them better??
Click here to see answer by ptaylor(1578)

Question 67207: y=3x+6
Click here to see answer by cassiroberts(11)

Question 67324: how do i find an equation relating the two variables

Click here to see answer by stanbon(26279)

Question 67313: Business and finance. The cost of producing a number of items x is given by
C = mx+b, in which b is the fixed cost and m is the variable cost (the cost of
producing one more item).
(a) If the fixed cost is $40 and the variable cost is $10, write the cost equation.
(b) Graph the cost equation.
I know A and B I need help with c and d
c) The revenue generated from the sale of x items is given by R=50x. Graph the
revenue equation on the same set of axes as the cost equation.
(d) How many items must be produced for the revenue to equal the cost (the
break-even point)?
Click here to see answer by stanbon(26279)

Question 67308This question is from textbook An Incremental Development

: Complete the square as an aid to graphing
y = -x^2 + 8x - 12This question is from textbook An Incremental Development

Click here to see answer by venugopalramana(3286)

Question 66316: A ratio of two like quantites with different units can be used as a conversion factor. Use the fact that 1 mile=1.6 kilometers to convert the following quantites.
A) 50miles to kilometers. 50*1.06=53kilometers?
B) 90km/hr to mi/hr. 90km divided by 1.6= 56.25mi/hr?
C) How many m/s is 90km/hr. 56.25 divided by 60mins=.9375?
.9375 divided by 60sec= .015625?
Click here to see answer by 303795(562)

Question 67343: Hi, can someone please help me solve the following by graphing? Thanks in advance!

1. 3x - 5y = -9
5x - 6y = -8

2. 4x + 5y = -2
4y - x = 11

Click here to see answer by Edwin McCravy(2922)

Question 67464: heres our problem (1,y),(2,4),m=1 the directions say find the value of y so that the line passing throuhg the two points has the given slope
Click here to see answer by ankor@dixie-net.com(6693)

Question 67512: Determine which two equations represent parallel lines.(a) y = x + 4 (b) y = x – 7 (c) y = 2x + 8 (d) y = 2x – 4
Click here to see answer by bam878s(76)

Question 67426: x+y+5 x-y=1 solve and show graph
Click here to see answer by aaaaaaaa(138)

Question 67563: draw gragh
x-4y=0
Click here to see answer by checkley71(8405)

Question 67561: draw graph
y=4/3x +2
Click here to see answer by checkley71(8405)

Question 67725: Graph 3x+2y=6
Thanks
Click here to see answer by stanbon(26279)

Question 67796: Solve by graphing.
x + y = 3
x - y = 1
I did:
x + y = 3 y = -x + 3 m = -1, 6 = 3
x - y = 1 -y = -x + 1 m = -1, 6 = 1
on my graph they coincided with each other instead of intersecting which is how the answer reads. (2,1)
Where did I go wrong?
Thanks a lot. Kyle
Click here to see answer by checkley71(8405)

Question 67823This question is from textbook Algebra: Tools For A Changing World

: what is y=mx+b if y=7, x=6, and m=undefinedThis question is from textbook Algebra: Tools For A Changing World

Click here to see answer by stanbon(26279)

Question 67845: Draw the appropriate graphs in the following:
A small firm produces both AM and AM/FM car radios. The AM radios take 15 hours to prduce, and the AM/FM radios take 20 hours. The nimber of prduction hours is limited to 300 hours per week. The plant's capacity is limited to a total of 18 radios per week, and existing orders require that at least 4 AM radios and at least 3 AM/FM radios be produced per week. Write a system of inequalities representing this situation. Then, draw a graph of the feasible region given these conditions, in which X is the number of AM radios and Y is the number of AM/FM radios.
Any help with this would be greatly appreciated. Thanks.
Click here to see answer by stanbon(26279)

Question 67926: 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(26279)

Question 67928: Can you tell me how to solve
X^2+9X+20=0 by factoring
Click here to see answer by checkley71(8405)

Question 67950: How would you graph this function?
f(x) = -2x - 5
Click here to see answer by stanbon(26279)

Question 68049This question is from textbook Glenco Algebra 1, Volume 1
: Ok, i need to graph each equation by using the slope and y-intercept.
Here is my problem:
5y+3=-5This question is from textbook Glenco Algebra 1, Volume 1

Click here to see answer by stanbon(26279)

Question 68126: Solve by graphing the system.
2x + 4y = 2
x + 2y = 1
These problems I seem to have a hard time understanding. I am needing some help with this. Thanks
Click here to see answer by josmiceli(3009)

Question 68127: Solve by graphing the the system.
4x + 2y = 10
y = 4
Any help with this would be helpful, I am having a hard time with these problems. Thanks
Click here to see answer by stanbon(26279)

Question 68084: Graph the inequality
3x + y less than or equal to 5
I am confussed and not sure how to graph this equation. Thanks
Click here to see answer by stanbon(26279)

Question 68189: Graph the inequality
4x + y is greater than or equal to 4
Click here to see answer by funmath(2873)

Question 68148This question is from textbook Algebra for College Students

: If one-half of the complement of an angle plus three-fourths of the supplement of the angel equals 110 degrees, find the measure of the angel.This question is from textbook Algebra for College Students

Click here to see answer by checkley71(8405)

Question 68117: Graph the solution set of x < 7.
Click here to see answer by funmath(2873)

Question 68236: I don't know how to graph two equations to find the breaking point.
C=25+x*0.24 and C=31+x*0.19
I have to graph these points to find the breaking point and I am stuck..How do I do this?
Thanks Brandi

Click here to see answer by checkley71(8405)

Question 68022: Given a line containing the points (1,4), (2,7), and (3,10) determine the slope-intercept form of the equation, provide one additional point on this line, and graph the function.
Click here to see answer by checkley71(8405)

Question 68273This question is from textbook An Incremental Development

: Please help to graph on a rectangular coordinate system
x + 3y + 6 = 0This question is from textbook An Incremental Development

Click here to see answer by checkley71(8405)

Question 68265This question is from textbook An Incremental Development

: PLease help!
Complete the square as an aid in graphing :
y = -x^2 + 8x - 12This question is from textbook An Incremental Development

Click here to see answer by Nate(3495)

Question 68290: I could really use some help. Thanks!
Angela

Find the slope of the line passing through the points (–8, –3) and (–2, 2).
Click here to see answer by checkley71(8405)

Question 68291: Which of the ordered pairs
(3, 1), (0, –4), (–4, 0), (–3, –7)
are solutions for the equation x – y = 4?

Thanks!

Click here to see answer by checkley71(8405)

Question 68295: Find the slope of the line passing through the points (–9, –4) and (0, –4).
Thanks!
Click here to see answer by checkley71(8405)

Question 68294: Use the following tabe to answer the question.
Population of Europe by Age GroupsPopulation (in thousands)195019701995Age 0-14143,175166,367139,464Age 15-64359,162421,432487,110Age 65+44,98168,642101,338Age 75+14,55322,76238,139Total547,318656,441727,912Source: European Rural Development (ERD) Project.Between 1950 and 1995, did the European population for age 15-64 or for age 75+ increase by a greater percentage?

Click here to see answer by stanbon(26279)

Question 68293: Find the slope of the line passing through the points (4, 0) and (4, 5).
Thanks!
Click here to see answer by stanbon(26279)

Question 68323:
Which of the ordered pairs is a solution for the equation 3x – 2y = 6?
A) (0, –3) B) (0, 3) C) (–2, 0) D) (–2, –3)

Click here to see answer by rmromero(383)

Question 68328: An employee who produces x units per hour earns an hourly wage of y = 0.55x + 7 (in dollars). Find the hourly wage for an employee who produces 13 units per hour.
Thank you
Click here to see answer by stanbon(26279)

Question 68327: Graph x=3
Thank you.
Click here to see answer by stanbon(26279)

Question 68209: how do you graph y<-5/4x+1/4.
Click here to see answer by ankor@dixie-net.com(6693)

Question 68326: graph 3x+2y=6
Thank you.
Click here to see answer by rmromero(383)

Question 68343This question is from textbook Study Guide and Practice Workbood - Prentice Hall Algebra I
: My son is working on rise over run and finding the slope of a line. it has been a long time since I have done this kind of Math, he doesn't understand this at all.
Equation: Y<3X - 4
Please explain in steps so that I can explain it fully to him.
Thank you
Pam JerniganThis question is from textbook Study Guide and Practice Workbood - Prentice Hall Algebra I

Click here to see answer by Earlsdon(4900)

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