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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 250478: Find the distance between (4,5) and (-1,2)
Click here to see answer by MRperkins(300)

Question 250460: The function Hdescribed by H(x)=2.75x+71.48 can be used to predict the height in centimeters in a woman whose humerus is x cm long
Predict the height of a woman whose humerus is 33 cm long
The solution is ? cm?
Can someone please help me with this question? Thank You

Click here to see answer by Theo(3458)

Question 250439: I am not sure how to graph the equation Y = 6x + 10x
Click here to see answer by Theo(3458)

Question 250422: x-y=4
x+y=6
Click here to see answer by Alan3354(30959)

Question 250375: Write the equation of the line that contains (-4,-3) and is parallel to the line y=-1/2x.
Click here to see answer by Fombitz(13828)

Question 250403: Please help me write two equations for this word problem. One equation for members and one for non members.
To encourage customers a movie theater is offering memberships. The membership costs $75.00 per year plus $2.00 per movie. For non-members, the cost of a movie is $5.75.
Thanks sooo much! Lisa
Click here to see answer by Theo(3458)

Question 250390: how do you solve this function if they're is no number to plug in?
f(y) f(x)=5x-9
Click here to see answer by Fombitz(13828)

Question 250573: How do you change y+2=-3(x-1) into standard form
Click here to see answer by richwmiller(9135)

Question 250447: 8x = 7y + 35
Click here to see answer by richwmiller(9135)

Question 250342: Can someone help please
In 1990, the life expectancy of males was 64.7 years, in 1995 it was 67.8 years. Let E represent the life expectancy inyear t and let t represent the number of years since 1990.
E(t)=?t+? round to the nearest tenth
Use the function to predict the life expectancy in 2005
E(15)=? round to the nearest tenth
Click here to see answer by ankor@dixie-net.com(15624)

Question 250628: Solve for x.
[(x+4)/5]-[(x+2)/3]>1/2

Click here to see answer by Fombitz(13828)

Question 250689: -7x>1/15
This says solve using the multiplication principle I came up with the answer {x/x<-1/105 is this correct? can someone help please thanks
Click here to see answer by jsmallt9(3296)

Question 250690: I need to find the domain of the function
g(x)=2/7-5x
Can someone please help me Thank you
Click here to see answer by MRperkins(300)

Question 250714: Amy paid $79.47 for a pair of shoes during a 40% off sale. What was the regular price? It says round to the nearest cent if necessary. Can someone please help me I came up with $198.67 but Im not so sure about it.Thanks
Click here to see answer by MRperkins(300)

Question 250719: how to state the slope n y-intercept of the graph of this equation: y=-2/3-4
Click here to see answer by richwmiller(9135)

Question 250729: 7x-7y=3
Click here to see answer by richwmiller(9135)

Question 250732: Graph the equation and identify the y-intercept
y+x=-7
The ordered pair I came up wit is (-3,-4) is this correct somebody?anybody Thanks
Click here to see answer by richwmiller(9135)

Question 250742: How would I solve a Linear Equation in standard and slope-intercept form if the slope is 0?
(For example: the 2 coordinates were (-3,8)and (1,8) which calculated to the slope being 0)

Click here to see answer by richwmiller(9135)

Question 250743: write an equation of the line that passes through the given point and is parallel to the given line. (5,4), y=3x+5
Click here to see answer by blwinbbbles(106)

Question 250749: identify the slope that is parallel to these lines
y=-3x+8
and
2x-3y=6
Click here to see answer by richwmiller(9135)

Question 250749: identify the slope that is parallel to these lines
y=-3x+8
and
2x-3y=6
Click here to see answer by Alan3354(30959)

Question 250756: how do you do slope of the line
Click here to see answer by richwmiller(9135)

Question 250758: I need to find the domain of the function
g(x)=2/7-5x
Can someone help me please and is x condidered a real number? Thank you
Click here to see answer by stanbon(57219)

Question 250758: I need to find the domain of the function
g(x)=2/7-5x
Can someone help me please and is x condidered a real number? Thank you
Click here to see answer by dabanfield(803)

Question 250755: graph the line containing the given pair of points and find the slope
(3,6), (-2,-3)
m=?
I can not figure this out would someone help me please and can I see a graph? Thanks so much
Click here to see answer by richwmiller(9135)

Question 250771: My derictions say find the slope of the line parallel to the graph of each equation and my first problem says y=1/2x+2.3 i do not understand this thankyou-carol
Click here to see answer by stanbon(57219)

Question 250920: write an equation in slope-intercept form for a line that passes through the given point and is parallel to the given line
y=5x;(2,-1)
Click here to see answer by tutorcecilia(2152)

Question 250932: Y = 3 what is the slope for this line?
X = -2 what is the slope for this line?
Are they perpendicular? Explain
Click here to see answer by Theo(3458)

Question 250935: Fahrenheit temperature F is a linear function of Celsius temperature C. When C = 0, F = 32. When C = 100, F = 212. Write F as a linear function of C and Find F when C = 45?
answer F = _____
answer C = 45 less than F = ______
Click here to see answer by MRperkins(300)

Question 250934: Two angles are Supplementary. One angle measures three times the other one. Find the measure of both angles.
Click here to see answer by MRperkins(300)

Question 250933: A 5% alcohol solution is to be mixed with a 20% alcohol solution to make 30 liters of 10% alcohol solution. How many liters of each solution should be mixed?
Don't have a clue as to where to start
Click here to see answer by MRperkins(300)

Question 250931: Use the x and y intercepts to graph the line: 3x + 2y = 6
3x + 2y = 6
(-3x) = 6 - 3x
= 2y = -3x + 6
= divide each side by 2 but then stuck and also need to graph. Help!! Finals.
Click here to see answer by MRperkins(300)

Question 250923: write an equation in slope-intercept form for a line that passes through the given point and is parallel to the given line
y=5x;(2,-1)
Click here to see answer by MRperkins(300)

Question 250924: write an equation in slope-intercept form for a line that passes through the given point and is parallel to the given line
y=5x;(2,-1)
Click here to see answer by Fombitz(13828)

Question 250977: I have a question this problem says to simplify
5[42-(10-90)]=?
I got 610 for the answer can someone tell me if that is correct? Thanks so much.
Click here to see answer by vksarvepalli(154)

Question 250981: I have another one I'm not sure about it says to solve the compound inequality
7>-4x+6 or 10≤-5x+4
The answer I got was (-∞,∞)is this correct? Thanks for your time.
Click here to see answer by vksarvepalli(154)

Question 250987: This says to find the domain of the function
p(x)=x²-2x+5
What is the domain of p
x|x is a real number and x>0}
{x|x is a real number and x≠0}
{x|x is a real number and x≠5}
{x||x is a real number}
These are the choices and I got the last one for the answer is this correct? Thanks to anyone who can help.
Click here to see answer by stanbon(57219)

Question 250991: What is the slope of the line passing through (3,5) and (7,21)?
Click here to see answer by richwmiller(9135)

Question 250997: I need to see a graph of these inequalities
y≥-4
x≥5
it says graph the system of inequalities
Can someone help me thanks
Click here to see answer by richwmiller(9135)

Question 251019: Complete the ordered pair so that it is a solution of 2x/3 + y - 1 = 0 .
(-6, ___)
3
4
5

Click here to see answer by richwmiller(9135)

Question 251039: The length of a golden rectangle is approximentaly 1.6 times the width.Find the dimensions of a golden rectangle if its area is 9000m2
Click here to see answer by solver91311(16868)

Question 251049: How many real number solutions exist for the equation
Y=x^2+8x+16

Click here to see answer by vleith(2825)

Question 250972: the current in a stream moves at a speed of 3 mph. Aboat travels 45 mi upstream and 45 mi downstream in a total time of 8 hr. what is the speed of the boat in still water?
Click here to see answer by checkley77(12569)

Question 250980: This problem says solve then graph on a number line
7x≥42
The solution is mulitle choice and Im not sure I got the right one Can someone help me please? the choices are
{x|x≥6}
{x|x≤6}
{x|x<6}
{x|x>6}
Click here to see answer by PRMath(123)

Question 251046: Find the x-intercepts
Y= x^2+4x-1

Click here to see answer by actuary(112)

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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, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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