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 33566: which is an equation for the line that contains the points (-2, 3) and (2, -1)?

Click here to see answer by Nate(3495)

Question 33598This question is from textbook

: I need to make a table with integer values of x from -2 to 2. the problem is This question is from textbook

Click here to see answer by checkley71(8405)

Question 33607: How do you graph 3x^2+6x-12
Click here to see answer by stanbon(26273)

Question 33596This question is from textbook

: How do i make a table with integer values of x from -2 to 2
y = - x - 1This question is from textbook

Click here to see answer by Nate(3495)

Question 33623This question is from textbook COLLEG ALGEBRA

: I need Help!

1) An open-top box is to be constructed from a 6 by 8 foot rectangular cardboard by cutting out equal squares at each corner and the folding up the flaps. Let x denote the length of each side of the square to be cut out.
a) Find the function V that represents the volume of the box in terms of x.
Answer

b) Graph this function.
Show Graph here

c) Using the graph, what is the value of x that will produce the maximum volume?
Answer
This question is from textbook COLLEG ALGEBRA

Click here to see answer by mukhopadhyay(490)

Question 33645This question is from textbook Algebra 1
:

x.x +2x-15= -12This question is from textbook Algebra 1

Click here to see answer by stanbon(26273)

Question 33714: Write an equation in slope-intercept form of the line that passes through the given point and is parallel to the graph of each equation.
y= -(two thirds)x+4; (1,-3)
Click here to see answer by venugopalramana(3286)

Question 33705: Give the coordinates of the vertex.
7) y = (x - 2)^2

A) ( -2, 0)

B) (0, -2)

C) (0, 2)

D) ( 2, 0)
Click here to see answer by venugopalramana(3286)

Question 33769: 1. Write a formula that describes the function for: A large pizza costs $12.00 plus 30 cents for each topping. Express the total cost C as a function of the number of toppings t.
2. Graph 5y - 3x >= 25
Click here to see answer by Nate(3495)

Question 33824: not sure of the appropriate topic for shifting:
given f(x)=x^2-8
shift f(x)2 units to the right I got h(x)=f(x-c)=(x-2)^2-8
shift f(x)2 units down I got h(x)=x^2+(-8-2)=x^2-6
shift f(x)2 units right and 2 units down I got h(x)=(x-2)^2+(-8-2)
Am I correct?
Click here to see answer by ice_water35(8)

Question 32959: Hi can you please help me?
How do you find the equation of a line that is graphed?
For example the problem that I have is graphed but it only shows one point of ordered pairs which is (3,1) The answer is supposed to be put in standard form but I don't know how to find the slope with only one shown set of ordered pairs.
Thank you,
Sasha
Click here to see answer by kietra(57)

Question 33515: Can you help me to understand and explain this? Thanks.
Conic sections are curves that are created by intersecting a right circular cone and a plane.
-Explain how these curves can be created geometrically.
-Are conic sections functions?

Click here to see answer by stanbon(26273)

Question 33980: Graph the following linear equations and advise points:
3x-2y=12
and
y=2x+5
thanks!
Click here to see answer by fanism(39)

Question 33998This question is from textbook Prealgebra & Introductory Algebra

: Determine whether the lines are parallel, perpendicular, or neither.

3x - 8y =17
64x + 12y = 14This question is from textbook Prealgebra & Introductory Algebra

Click here to see answer by longjonsilver(2297)

Question 34017: 1. Show and explain the steps to solving the following systems of equations by graphing. For each problem tell the x- and y- intercepts of EACH line and the slope.
a. 3x + 2y = 6; 4x - y = 8
b. x + 2y = 4; x - y = 1
c. x - 4y = -4; x + 2y = 8
2. Show and explain the steps to solving the following systems of equations by addition. Show ALL steps involved.
a: 3x - 2y = 23; x + 5y = -15
b. x + 2y = -2; 3x + 2y = -12
c. 3x + 4y = 3; 6x - 2y = 1

Click here to see answer by lyra(94)

Question 34018: 5. Show and explain the process of solving the following application problems using equations:
a. A cable 200 ft. long is cut into two pieces so that one piece is 12 ft. longer than the other. How long is each piece?
b. A boat travels 24 miles upstream in 3 hours. It then takes 3 hours to go 36 miles downstream. Find the speed of the boat in still water and the speed of the current.
c. A service station wishes to mix 40L of a 78% antifreeze solution. How many liters of a 75% solution and a 90% solution should be used in forming the mixture?

Click here to see answer by xcentaur(357)

Question 34311: Write the equatin of the line L satisfying the given geometric conditions:
L has y-intercept (0,2) and is perpendicular to the line with equation 2x-3y=6
Click here to see answer by venugopalramana(3286)

Question 34310: Write the equation of the line L satisfying the given geometric conditions:
L has y-intercept (0,-3) and is parallel to the line with equation y=2/3x + 1
Click here to see answer by venugopalramana(3286)

Question 34308: 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 34309: 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 perpendicular ot the side through the points (2,3) and (-3,18).
Click here to see answer by venugopalramana(3286)

Question 34246: Determine whether the following pairs of lines are parallel, perpendicular or neither.
A) 2x + y = 1 and x-2y-1
b) 3x-y + 2= 0 and 3x + y = 0
C) y = 2x - 1 and 2x-y + 3=0
Click here to see answer by venugopalramana(3286)

Question 34244: Please help.
a)Find the equation of the line with a gradient of 3, passing through the points (4,-2).
b) Find the equation of the line containing the points (-2,4) and (5,3)
Click here to see answer by venugopalramana(3286)

Question 34330: x+y=1
5x+5y=3
how many solutions are there?
Click here to see answer by fanism(39)

Question 34276: I'm having a difficult time with this problem, please help
Solve the system of inequalities x>2 and y<_ x+3 by graphing. If the system does not have a solution. write no solution????????????????
Click here to see answer by benni1013(141)

Question 34254: solve the following equations for x and y.
1.x+y=25
y=4x
2.x=y+8
2x+y=52
5. 3x+y=33
x=y-13
7.x-y=-10
3x=y+18
Click here to see answer by benni1013(141)

Question 32624: I need help finding the slope and y-intercepts of each equation, and graping for the following equations:
y=x+2
y+3=-1/3x
y=2x-1
y-3/5x=-2
y=1/2x-4
y-2x=-3
y=2/5x+3
y+1/3x=-2
y=-x-2
y-6=-2x
Click here to see answer by benni1013(141)

Question 31796: Can someone help? and check my answer to see if im doing this right?
For the function y = x^2 - 4x - 5, perform the following tasks:
(1)Put the function in the form y = a(x - h)^2 + k.
I got the answer: y = (x-2)^2 - 9
What is the line of symmetry?
I got the answer: x = 2
Graph the function using the equation in part (1). Explain why it is not necessary to plot points to graph when using y = a (x – h)^2 + k.
how does this graph compare to the graph of y = x^2?
Click here to see answer by venugopalramana(3286)

Question 34331: 5x^3y+20x^2y^2+20xy^3
all over
5xy
please simplify
note:^ means raised to the power of.
Click here to see answer by benni1013(141)

Question 34495This question is from textbook College algebra

: I can't figure out how to graph this one at all. Please help and thank you so very much! Problem: 3x-2y=6
question; (a) give a table with three ordered pairs that are solutions, and (b) graph it.
I am having a problem graphing this one as well as not being able to find 3 ordered pairs that are solutions. Thanks agian. This question is from textbook College algebra

Click here to see answer by lyra(94)

Question 34493This question is from textbook College algebra

: Thank you so much for taking the time to help students like me that are in way over thier heads. I am that is for sure. I really appericate it. Thanks again. First heres the directions; for the points P and Q, find (a)the distance d(P,Q) and (b) the coordinates for the midpoint of the segment PQ. #10 P(-4,3), Q(2,-5) This is what I did...
d(P,R)= (under the radical sign) (2-(-4)squared + (-5-3)squared
=(2+4) squared + (-5-3)squared
=2Squared + 4squared + -5squared -3squared
=6squared + -8squared
=36+64= 100 under radical sign
Heres the midpoint; -4+2/2squared, 3+-5/2squared
= -1 and -2/5

I hope you were able to figure out what I did. I am pretty sure I got @ least part of it right. Thanks again. Have a great day.

This question is from textbook College algebra

Click here to see answer by Earlsdon(4900)

Question 34493This question is from textbook College algebra

Click here to see answer by stanbon(26273)

Question 34527: I think my graph is right, but I did it by substitution.. I can't get the X-intercept to match my graph...
Graph the function f(x)= 2 * (3^x) - 5. Indicate the horizontal asymptote (which I believe is y=-5) also find the X-intercept (exact solution and then round to four decimal places.)
Click here to see answer by josmiceli(3007)

Question 34199This question is from textbook Prealgebra & Introductory Algebra

: Find an equation of the line with the given slope that passes through the given point. Write the equation in the form Ax + By= C
m=-7; (-10,11)This question is from textbook Prealgebra & Introductory Algebra

Click here to see answer by josmiceli(3007)

Question 34544This question is from textbook College algebra

: Hi, I am having a hard time with this problem! I just don't get it. Question; Find the slope of the line satisfying the given conditions.
#40. Horizontal, through (6,5)
If you could help with this one I would appericate it. Thanks, Angela MThis question is from textbook College algebra

Click here to see answer by checkley71(8405)

Question 34611: graph f(x) = -2x + 2
Click here to see answer by lyra(94)

Question 34615This question is from textbook
: solve by graphing
x-y=2
x+y=6This question is from textbook

Click here to see answer by lyra(94)

Question 34725This question is from textbook College algebra

: Let f(x)=2x-3and g(x)=x+3. FInd the composite function. (f0g)(7)Thanks for the help!This question is from textbook College algebra

Click here to see answer by longjonsilver(2297)

Question 34723This question is from textbook College algebra

: I need help. I don't know where to go from here. Okay, questions is; write and equations(a) in standard form and (b) in slope-intercept form.
Problem; through -(2, 0), Perpendicular to 8x-3y=7
This is what I came with and I don't know what to do after, if I even got this much right? y-0=3/8 (x-(-2), Y-0=3/8x+6/8...Thank you for your help. This question is from textbook College algebra

Click here to see answer by longjonsilver(2297)

Question 34767: Solve if possible or determine no solution or infinite solutions.
x+3y=-15
2x+5y=-21
Click here to see answer by checkley71(8405)

Question 34924: A line is tangent to the circle whose equation is x^+y^+6x-6y-2=0 at the point (1,5). Find the Slope-intercept form of the tangent line.
Can you help??
Click here to see answer by venugopalramana(3286)

Question 34923: I am not sure how to figure out this equation, can you help explain step by step?
The endpoints of the diameter of a circle are (-7,1) and the center point of x^+y^-2x-10y+25=0. Find the standard equation of this circle and graph. Find and label the x-intercepts and the y-intercepts.
I appreciate any help you can give.
Click here to see answer by venugopalramana(3286)

Question 34937: slove the equation -9h-6+12h+40=22
Click here to see answer by priya(51)

Question 34946: slove the equation 9h+2<-79

Click here to see answer by Earlsdon(4900)

Question 34945: simpilfy this expresstion 13+(-12)-(-5)=?

Click here to see answer by Earlsdon(4900)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000