Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

Tutors Answer Your Questions about Functions (FREE)

Question 253124: how can you tell if a function is linear?
Click here to see answer by jim_thompson5910(35256)

Question 253167: Explanation of functions. I need to make a logo that I must create from functions I know. To get a good grade I must use functions that I haven't seen before. However, I am having a hard time understanding new functions over the internet. These are the functions that I know.
-Linear (y=ax+b)
-Quadratic (Parabole)
-Absolute Value
-Exponential
-Square root
-Rational (y=a/x-h +k)
-... stairs one: y=a[b(x-h)]+k
Sorry, I study in french and I hope this is clear enough. I need at least 2 new functions explained with detail please. I am allowed to use the circle. I think that will be a simple one. I must determine a Domain(?) and a Image(?) Hope I said it right. I need to be able to find the rule (?)for the function from the graphic and how I did it. If I don't get help before tuessday january 5th then I die :( Maybe you can just point me to a good simple site that explains functions well. I apreciate any help :) Dont consider my language as a problem I can learn the terms you use fast. THANK YOU
Click here to see answer by drk(1908)

Question 253282: The relation in the table is a function. Which ordered pair can be included with this relation to form a new relation that is also a function?
Input: -5,0,5,10
Output: 12,15,18,21
(A) (5,7)
(B) (0,2)
(C) (-5,5)
(D) (2,16)
I put the input/output numbers EXACTLY as I saw them in the graph. I apologize if I made any violation, because the problem included a graph, but I did not see "Algebra: Functions,Domain, WITH graphing". The letters (A)-(D) were answer choices. Please answer this problem promptly, and I once again apologize, this time for troubling you with my own procrastination concerning my math homework.
Click here to see answer by jim_thompson5910(35256)

Question 253252: Which value of x makes the expression xsquared + 10x + 16 undefined?
___________________
2x - 10
Click here to see answer by jim_thompson5910(35256)

Question 253436: Write the rule that represents the function
x = -1, 0, 1, 2
y = 1/4, 1, 4, 16
Write the rule that represents the function
x = 0, 1, 2, 3, 4
y = -7, -2, 3, 8, 13
Click here to see answer by Edwin McCravy(20054)

Question 253783: Write the linear equation satisfying each of the following conditions: parallel to the line 2x - 3y = 6 and has a y-intercept of 7. [Write the equation in the form ax + by + c = 0].
Click here to see answer by palanisamy(496)

Question 253837: Which of these sets of coordinates is not a function?
a){(3, 2), (5, -1), (13, 12), (-2, 2)}
b){(4, 3), (4, -3), (2, 12), (7, 11)}
c){(1, -1), (0, 2), (-1, 1), (3.5, 4.6)}
d){(8, 0), (5, 1), (-8, -1), (3, 4)}
Click here to see answer by MRperkins(300)

Question 253857: How do you solve this problem g[f(4)] ?
Click here to see answer by MRperkins(300)

Question 253862: If g(x) = 2x - 1, find g(4).
Click here to see answer by MRperkins(300)

Question 253860: If f(x) = -5x, find f(-3).
Click here to see answer by checkley77(12844)

Question 253855: How do you solve this problem f[g(-2)] ?
Click here to see answer by Theo(13342)

Question 253902: how do you solve for b2 in the problem: A=1/2h(b1+b2) ? otherwise known as the formula for area of a trapezoid
thanks
Click here to see answer by ankor@dixie-net.com(22740)

Question 254011: What is a function that has the values f(1)=8 and f(7)=-10
Click here to see answer by jim_thompson5910(35256)

Question 254165: Evaluate the function when x=3, x=0, x=-2
1)g(x)=4x-1
2)h(x)=-3x+8
Click here to see answer by solver91311(24713)

Question 254257: what is the difference between domain and range
Click here to see answer by drk(1908)

Question 254257: what is the difference between domain and range
Click here to see answer by richwmiller(17219)

Question 254277: How do convert the equation: y= 0.15 x into function notation?
Click here to see answer by stanbon(75887)

Question 254688: Trying to help son with homework but it's been over 20 yrs. since I did any algebra and I'm totally stumped on this. I need to find the domain of "p". The equation is:
p(x) = x to the 2nd power - 2x + 6
Multiple choice answers are:
a. {x | x is a real number}
b. {x | x is a real number and x is less than zero}
c. {x | x is a real number and x does not equal zero}
d. {x | x is a real number and x does not equal 6}
Click here to see answer by stanbon(75887)

Question 254781: Can you help me with these problems? Find the domain and the range of these functions.
1. f(x)1/sqrt(5+x)
2. 3y-7x=15
Thank you so much!
Click here to see answer by stanbon(75887)

Question 254823: If f(x) = 2x +5 and g(x) = x � 3, find the inverse of f(g(x)) and write your
answer as a single fraction in reduced form.

Click here to see answer by stanbon(75887)

Question 254858: {(1,3),(6,7)(-4,3),(-1,-6),(0,0)} what is the domain of the relation
Click here to see answer by Fombitz(32388)

Question 254860: {(1,3),(6,7)(-4,3),(-1,-6),(0,0)} what is the range of the relation
Click here to see answer by stanbon(75887)

Question 254856: is {(1,3),(6,7),(-4,3),(-1,-6)(0,0)} a function or not a function
Click here to see answer by stanbon(75887)

Question 254855: what is the answer to f(x)=2x+4, find f(-2)
Click here to see answer by stanbon(75887)

Question 254998: i need help with these questions k(x)=9x
A. K(-19)
B. k(13)
C. K(24)
Click here to see answer by richwmiller(17219)

Question 255172: {(-2, 7), (-1, 5), (0, 3), (1, 1), (2, 1)} is this a function and if so why
Click here to see answer by dabanfield(803)

Question 255172: {(-2, 7), (-1, 5), (0, 3), (1, 1), (2, 1)} is this a function and if so why
Click here to see answer by Edwin McCravy(20054)

Question 255355: write in standard form, m= 5 and b = -5
Click here to see answer by drk(1908)

Question 255384: if k(x)={(2,3),(4,5),(3,-2),(1,-5), (0,-1)} find
I'm supposed to be trying to solve for
Please help! :D It will be appreciated!
Click here to see answer by drk(1908)

Question 255339: given that f(x)=3x/9+x
solve f(x)=2.75
Click here to see answer by checkley77(12844)

Question 255494: Im not sure if this is the right section, but...
please help. I have a few questions like this, and i do not remember the formulas.
Write the slope of a line that is parallel to the like y=4/3x+13
Also- Write the equation of a line that is parallel to the like y=4x+32 and that passes through the point(6,-2)
Sorry that i have two questions. Please and thank you.
Click here to see answer by palanisamy(496)

Question 255552: what is the domain of the function f(x)=sqrt of x^2-3x-10?
Click here to see answer by edjones(8007)

Question 255553: solve: sqrt of x+5 + sqrt of x-3 = 4
Click here to see answer by EMStelley(208)

Question 255553: solve: sqrt of x+5 + sqrt of x-3 = 4
Click here to see answer by edjones(8007)

Question 255490: If f(x)=3x+9 and g(x)=2x-2 find (f o g) (-9)
Click here to see answer by EMStelley(208)

Question 255797: Please help me with this...
For all x=-4, which of the following is equivalent to the expression below?

x2 + 12x +32
-------------------
x+4
Click here to see answer by richwmiller(17219)

Question 255778: please help me with this, if 4/5+(3/10)=x+1/2, then x=
Click here to see answer by ankor@dixie-net.com(22740)

Question 255962: An open box is made from an 8-by-10-inch rectangular piece of cardboard by cutting squares from each corner and folding up the sides. If x represents the side length of the squares, which of the following is a function giving the volume V(x) of the box in terms of x?
Click here to see answer by NRobinson(4)

Question 256029: State the domain of the following relation by clicking on the symbols to make the given answer correct.
{(x,y):y=x}
Domain {x: x R, x
Click here to see answer by drk(1908)

Question 256074: Please help me with this.
What is the slope of the line with the equation 2x+3y+6=0?
Click here to see answer by drk(1908)

Question 256075: Please help me with this
Point A (-4,1) is in the standard (x,y) coordinate plane. What must be the coordinates of point B so that the line x=2 is the perpendicular bisector of AB?
Click here to see answer by richwmiller(17219)

Question 256093: Please help me with this.
Listed below are 5 functions, each denoted g(x) and each involving a real number constant c>1. If f(x)=2x ( 2 exponent x), which of these 5 functions yields the greatest value for f(g(x)), for all x>1?
g(x)=cx
g(x)=c/x
g(x)=x/c
g(x)=x-c
g(x)=logcx
Click here to see answer by stanbon(75887)

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, 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