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

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Question 105719: Please help me solve the problem;
Find the measure of the acute angle that the line y=2/3x +2 makes with a horizontal line. Round the answer to the nearest tenth.
Appreciate your help. Thanks
Rupert
Click here to see answer by kmcruz09(38)

Question 105681: Problem #1
Line l goes through (1,3) and is parallel to the line through (4,3) and (-3,1). Find the slope of l.

Thanks for your help on this one. I am really lost.
Click here to see answer by Fombitz(13828)

Question 105785: The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 64 in., find the width of the rectangle.
Click here to see answer by checkley75(3666)

Question 105889: -7+x=-3

Click here to see answer by alouallen(1)

Question 105631: Graph the absolute value equation.
y=[x-3]
Click here to see answer by HyperBrain(694)

Question 106005: Find the slope of the line that passes through (0,2) and (4,4)
Click here to see answer by alvinjohnburgos(11)

Question 106051: Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible. Points: (-1,3) and (4,-2) Thank you.
Click here to see answer by jim_thompson5910(28598)

Question 106049: Write the equation of the line passing through each of the given points with the indicated slope. Give your results in slope-intercept form, where possible. Points: (0,5), m=-3/5
Click here to see answer by jim_thompson5910(28598)

Question 106089: Write the equation of the line L that has y-intercept (0,-3) and is parallel to the line with equation y=2/3x+1.
Click here to see answer by stanbon(57412)

Question 106089: Write the equation of the line L that has y-intercept (0,-3) and is parallel to the line with equation y=2/3x+1.
Click here to see answer by Fombitz(13828)

Question 106090: How do i calculate the value of the discriminant of x^2+x+3=0
Click here to see answer by stanbon(57412)

Question 106145: write the linear system and solve the system.
during a recent telethon, people pledged $25 or $50. twice as many people pledged $25 as $50. all together, $18,000 was pledged. how many people pledged $25?
i need helo solving this well putting it in an equation im not really good at settin up equations.... thanks for the help i greatly appreciate it.
Click here to see answer by stanbon(57412)

Question 106139: i need help solving this equation by using the elimination method.
y=-3/4x+1/4
y=3/4x-3/4
my teacher hasnt taught me how to solve these kind of equations in fractions.
thanks for the help
Click here to see answer by HyperBrain(694)

Question 106212: y=3x+2
Click here to see answer by HyperBrain(694)

Question 106226: Determine which two equations represent parallel lines.
a)y=4x-8
b)y=-4x+8
c)y=4x+3
d0y=-1/4x-8

Click here to see answer by stanbon(57412)

Question 106225: If the slope is 2 and my starting point is (-3,-6), where does my line on the graph run? Is it a vertical line two spaces to the right from my starting point? Or is is a horizontal line two spaces up from my starting point? I'm confused!
Click here to see answer by stanbon(57412)

Question 106222: Are the following lines parallel, perpendicular, or neither?
L1 with equation x – 6y = 24
L2 with equation 6x + y = 6

Click here to see answer by HyperBrain(694)

Question 106222: Are the following lines parallel, perpendicular, or neither?
L1 with equation x – 6y = 24
L2 with equation 6x + y = 6

Click here to see answer by edjones(7569)

Question 106221: Adult tickets for a play cost $18 and child tickets cost $2. If there were 20 people at a performance and the theater collected $88 from ticket sales, how many children attended the play?
Click here to see answer by jermz69(5)

Question 106325: perpendicular to 3x-2y=-1; through (2,-7)
find an equation of each line in function notation satisfying the conditions given.
Click here to see answer by benni1013(197)

Question 106320: how would u write a linear equation for this: the number of calories a person burns doing an activity is directly related to the time (in minutes) the person spends dong the activity. A person weighting 160 lbs burns 73 calories dancing for 20 minutes
Click here to see answer by stanbon(57412)

Question 106330: please help me with this.... I really need help with this question
A company tests the heavy duty elastic bands it m,akes by measuring how much they strech when supporting various masses.This data shows the results of tests on one of the elastic bands.
mass (kg) 0 , 2 , 4 , 6 , 8
Length (cm) 6.2 , 9.6 , 13.0 , 16.4 , 19.8
a) Graph this relation
b)what does the point (0,6.2) represent?
c)find the slope of the grah.Is it constant?what does it represent?
d)write an equation for the length in terms of the Mass?
e)predict how long the elastic band will be when supporting a 10 kg mass?
f) If the length for an 8 kg mass were 19.0 cm, how would the answer to part e) change?

Click here to see answer by stanbon(57412)

Question 106300: 1. All vertical Lines are parallel to what type of line?
2. All vertical lines are perpendicular to what type of line?

Click here to see answer by elima(1433)

Question 106379: What is the standard form of y+3=2(X+5)?
Please help me!
Click here to see answer by HyperBrain(694)

Question 106381: what is the answer to y+3=2(x+5)?
&& how do you do it?
Click here to see answer by kmcruz09(38)

Question 106323: parallel to x+4y=2; through (-1,3)
find an equation of each line in function notationsastisfying the conditions given.
Click here to see answer by josmiceli(9697)

Question 106412: describe a first step for solving each system using elimination.
1)x+y=6
x+3y=10
2)x-y=12
x+y=22
Click here to see answer by MathLover1(6646)

Question 106432: Determine if this question is linear or not, then graph the equation
y = 5x
Click here to see answer by stanbon(57412)

Question 106451: perpendicular to 3x-2y=-1; through (2,-7)
find an equation of each line function notation satisfying the conditions given.
Click here to see answer by solver91311(16897)

Question 106467: hi somebody please help me.................................
i am in desperate need of help
the answer follows down for your convenience.

For safetey reasons ,an extension ladder should have a slope of between 6.3 and 9.5 when it is placed against the wall.If the ladder reaches 8 m up a wall, what are the maximum and the minimum distances from the foot of the ladder to the wall?

The answer is minimum 0.84 m and maximum 1.27 m
Click here to see answer by bucky(2189)

Question 106466: HI please help me with this.The answer is stated at the bottom for your convenience.please explain and shoW your work.the question is:

A steel beam goes between the tops of two buildings that are 7 cm apart.One building is 41 m tall.The other one is 52 m tall.what is the slope of the beam?
the answer is 1.6 to the nearest tenth.
Click here to see answer by stanbon(57412)

Question 106372: Hello out there,I really need some help with some problems,the first one is,State whether the system is consistent and independent,consistent and dependent,or inconsistent:4x+2y=8 and 2x+y=1.The next one is,State whether the system is consistent and independent,consistent and dependent,or inconsistent:x+y=4 and 2x-y=-7.The third one is,Determine whether the system has one solution,no solution,or infinitely many solutions:y=-x+2 and 3x+3y=6.And the last one is,Determine whether the system has one solution,no solution,or infinitely many solutions:y=2/3x and 2x-y=-4.Thanks to whoever can help.
Click here to see answer by elima(1433)

Question 106473: Hello out there,I really need some help with some tough problems really bad,the first one is,Determine whether the system has one solution,no solution,or infinitely many solutions:y=2/3x and 2x-y=-4.The next one is,Determine whether the system has one solution,no solution,or infinitely many solutions:y=-x+2 and 3x+3y=6.The next one is,State whether the system is consistent and independent,consistent and dependent,or inconsistent:x+y=4 and 2x-y=-7.And the last one is,State whether the system is consistent and independent,consistent and dependent,or inconsistent:4x+2y=8 and 2x+y=1.Thanks to whoever can help me.
Click here to see answer by edjones(7569)

Question 106482: HI please help me with this.The answer is stated at the bottom for your convenience.please explain and shoW your work.

A steel beam goes between the tops of two buildings that are 7 m apart.One building is 41 m tall.The other one is 52 m tall.what is the slope of the beam?
the answer is 1.6 to the nearest tenth.:
Click here to see answer by checkley75(3666)

Question 106527: Find the slope and y-intercept. x = -1. I'm not sure if my slope is 0 or undefined or if my y-intercept is -1 or there is no y-intercept.

y = mx+b
y = 0 + (-1)
y = -1
Click here to see answer by stanbon(57412)

Question 106526: Write the equation of the line that passes through point (-1,-4) with a slope of 0. Just double checking if I did this right.

b= (-4)- 0(-1)= -4
y = -4
Click here to see answer by stanbon(57412)

Question 106525: Graph by first solving for y. 2x + 3y = 12. Just double checking.
-3y = 2x + 12
y = 2/3x + 4

m= 2/3 b= 4
Click here to see answer by stanbon(57412)

Question 106524: Write the equation of the line passing through (-3,-5) and (3,0). I don't know if I did this right.
m = 0-(-5)= 5
3-(-3) 6
y = 5/6x + 2/5
Click here to see answer by stanbon(57412)

Question 106523: Solve the system by graphing 3x – y = 1 3x – y = 2.
Click here to see answer by Nate(3500)

Question 106521: Given f(x)=-x^3+x^2+3x+4, find f(-1), f(0), and f(1).
Click here to see answer by Nate(3500)

Question 106522: Plot the point with coordinates (3, –5).
Click here to see answer by stanbon(57412)

Question 106573: Solve the system by graphing.
3x – y = 1
3x – y = 2

Click here to see answer by Earlsdon(6287)

Question 106554: 2 a) line of a slope 4 passing through the point (0,2)
b) line of slope -5 passing through the point (3,4)
c) line of slope 0 passing through (1,2)
find an equation for each line
Click here to see answer by ashlyn.xo(7)

Question 106557: find the slopes of lines through pairs.
a) (1,2)(3,5)
b) (0,0)(4,6)
c) (-1,2)(4,5)
d) (-2,-5)(-3,-9)
Click here to see answer by ashlyn.xo(7)

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, 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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, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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