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 79419This question is from textbook algebra 1

: What are the x-intercepts of the graph of y=-xsquared-6x+40This question is from textbook algebra 1

Click here to see answer by checkley75(3666)

Question 79387: How do I plot points with coordinates (2,3), (3,4), (4,5) on a graph? Would I be able to give the coordinates of another point with the same property? I have no idea of what to do here. Could somone possible explain the result step by step in order for me to understand the problem, Thank You
Click here to see answer by checkley75(3666)

Question 79435This question is from textbook Mcdougal Littell Algebra1
: x+3y-3=0This question is from textbook Mcdougal Littell Algebra1

Click here to see answer by checkley75(3666)

Question 79571: What is the Image of point (-3,-1) under a reflection in the origin?
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Question 79672: IF ALEXIS HAS $345 IN HER SAVINGS ACCOUNT AND WILL DEPOSIT $15 EACH WEEK.AFTER HOW MANY WEEKS WILL SHE HAVE $1,035?
Click here to see answer by checkley75(3666)

Question 79645: the order pair that is a solution of the equation???
y = x + 2

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Question 79725: 3x-2y=8
2x-3y=7
solve each of the following system of equations by graphing
Click here to see answer by checkley75(3666)

Question 79725: 3x-2y=8
2x-3y=7
solve each of the following system of equations by graphing
Click here to see answer by Edwin McCravy(2922)

Question 79776: Solve the following system of equations using the substitution method. Be sure to state the solution to the system.
2x=3y=7
y=-2/3x+3
Click here to see answer by rapaljer(3620)

Question 79774: Solve the following system of equations using the graph method. Be sure to state the solution to the system.
4x=6y=-18
y=1
Click here to see answer by rapaljer(3620)

Question 79775: Solve the following system of equations using the graphing method. Besure to state the solution to the system.
x-y=-5
2x-6y=-18
Click here to see answer by rapaljer(3620)

Question 79792: graph each of the following inequalities
3x - 4y < 12
Click here to see answer by mathgeek101(2)

Question 79890: can you help me PLEASE: Solve the inequalitie: 12x+31+6>0

Click here to see answer by checkley75(3666)

Question 79861: I actually have four problems, I don't use a textbook becuase my class is online. These are for linear graph equations.
1. y= 3/4x+2
2. 2x+3y=6
3 2x-3y=12
Click here to see answer by checkley75(3666)

Question 79924: 4x^2+40x+97 tell me the vertex and line of symmetry
Click here to see answer by jim_thompson5910(13787)

Question 79922: the equation of a line yhat is perpendicular to the line y=-3x+4
Click here to see answer by markburke(3)

Question 79943: find the slope and y-intercept of y=8x
Click here to see answer by 303795(562)

Question 79938: a line passing through (3,15) and (4,y) ia parallel to a line with slope -13. What is the value of y?
Click here to see answer by vertciel(183)

Question 79984: A line passing through (5,-8) and (9,y) is perpendicular to a line with slope -4/9. Find the value of y.
Click here to see answer by ankor@dixie-net.com(6693)

Question 80022: write the equasion of the line which passes through point (2,1) and is parallel to the line with equasion y=5/2x+6
Click here to see answer by checkley75(3666)

Question 80135This question is from textbook Gateways to Algebra and Geometry
: When a number line is used to add signed numbers, why is the endpoint of the first arrow at zero?This question is from textbook Gateways to Algebra and Geometry

Click here to see answer by stanbon(26268)

Question 80183: a real-life situation where a straight line graph might be applicable and explain why you think it is a STRAIGHT line.

Click here to see answer by muffinmix101(2)

Question 80258: Rewrite in standard form:
(0,5),m=-3/5
Give your result in slope intercept form where possible
I do not have a clue as to where to start with this problem, Please help!!
Click here to see answer by stanbon(26268)

Question 80257: Write the equation of the line passing through each of the given pairs of points.
Write the result in slope intercept where possible
(-1,-3) and (4,-2)
(2,-3) and (2,4)
Click here to see answer by jim_thompson5910(13787)

Question 80256: Find the slope of any line perpendicular to the line through points (0,5) and (-3,-4)
Click here to see answer by jim_thompson5910(13787)

Question 80210: The line that has y intercept of 2 and x intercept of 5
Click here to see answer by stanbon(26268)

Question 80278: what is the true equation for 2a+5b=3 is it (1/2, _4/5) or (0, 3/5). Can you show me how you came up with the answer
Click here to see answer by stanbon(26268)

Question 80266This question is from textbook

: i am supose to find the solution set.the point of intersection of x-y=4
3x+2y=7
then check algeb.[save me the exams are near]This question is from textbook

Click here to see answer by checkley75(3666)

Question 80286: Driving down a mountain, Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi horizontally away from the of the mountain. Find the slope of his descent to the nearest hundreth.
And is it possible to explain to me how to solve this, for future refrence.
Click here to see answer by checkley75(3666)

Question 80102: can someone please help me solve this rational equation b+3/b+b+4/b+5=15/Bsquared+5b
Click here to see answer by ankor@dixie-net.com(6693)

Question 80032: Use the given equations to find the missing coordiantes in the following tables.
y=-x+4

Click here to see answer by sofiyacherni(99)

Question 80344: Write the equation of the line passing through (-2,5) and (1,3). Answer must be written in slope intercept form. HELP ME!!! ;0(
Click here to see answer by checkley75(3666)

Question 80344: Write the equation of the line passing through (-2,5) and (1,3). Answer must be written in slope intercept form. HELP ME!!! ;0(
Click here to see answer by Edwin McCravy(2922)

Question 80347: whay is the point of doing this if we will never use it in life unlss you are going to be a mathamatition
Click here to see answer by scott8148(3382)

Question 80353: If P(4, -5) is a point on the graph of the function y=f(x), find the corresponding point on the graph of y=2f(x-6).
Click here to see answer by stanbon(26268)

Question 80343: slope: -3/4;y intercept:(0,8)...How in the world do I figure this out?Help me PLEEEASE...Thank You
Click here to see answer by checkley75(3666)

Question 80302This question is from textbook beginners algebra

: Are the following pairs of lines parallel, perpendicular, or neither?
L1 with equation x+2y=4
L2 with equation 2x+4y=5This question is from textbook beginners algebra

Click here to see answer by scott8148(3382)

Question 80519: How do I find the slope of the line passing through points (3,4) and (3,-4)? My solution is 0..am I right?
Click here to see answer by Earlsdon(4900)

Question 80517: How do I graph 3x+2y=6?
Click here to see answer by E86(1)

Question 80515: What are the ordered pairs as a solution to the equation 3x-2y=6?
I have (2,-3) am I right?
Click here to see answer by Earlsdon(4900)

Question 80516: What is the plot of the point with coordinates (-4,3)?
Click here to see answer by Edwin McCravy(2922)

Question 80514: How do I graph x=3?
Click here to see answer by Edwin McCravy(2922)

Question 80532: find an equation for the line with y-intercept 3 that is perpendicular to the line y=2/3x-4.
Click here to see answer by tutorcecilia(2042)

Question 80530This question is from textbook beginners algebra

: Writed the equation of the line passing through each of the given pairs of points. Write the result in slpe-intercept form, where possible
(-1,3) and (4,-2)

Writed the equation of the line passing through each of the given pairs of points. Write the result in slpe-intercept form, where possible
(2,-3) and (2,4)This question is from textbook beginners algebra

Click here to see answer by jim_thompson5910(13787)

Question 80644: Not sure if this is the right area, but could use some help. thank you for your time
The table below shows the frequency distribution for 12 students on a test with a maximum score of 20. Use these sample data to answer questions 5 through 7:
Score Frequency Midpoint Midpoint x Frequency Midpoint squared x Frequency
1 - 5 5
6 - 10 3
11 - 15 2
16 - 20 2

Totals
______5. The mean score, , of the data in the frequency distribution above is (to the nearest 1/10)
a. 8.0 b. 8.4 c. 8.7 d. answer not listed
______6. The standard deviation of the scores in the frequency distribution above is (to the nearest 1/10)
a. 5.0 b. 5.3 c. 5.8 d. answer not listed
_____7. The median score lies in which score interval?
a. 1 – 5 b. 6 – 10 c. 11 – 15 d. 16 - 20
thank you for your help David
Click here to see answer by stanbon(26268)

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