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

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Question 902651: Graph of a function f?
http://i.imgur.com/Gvee8xg.png?1
Please explain why I got this wrong
Click here to see answer by Fombitz(32388)

Question 902663: http://i.imgur.com/IDz1T4A.png?1
If it's on the x-axis and the highest point on the y is 7 wouldn't 2 be the point where it goes upwards to the max point?
please help!
Click here to see answer by Alan3354(69443)

Question 902638: Graph of a function f?
http://i.imgur.com/Gvee8xg.png?1
Please explain why I got this wrong
Click here to see answer by Alan3354(69443)

Question 902674: Factor the expression 30 x^2 + 61 x + 30
Click here to see answer by richwmiller(17219)

Question 902673: Find the discriminant of the equation 6x-9x^{2}+8 = 0
Click here to see answer by Stitch(470)

Question 902611: With the graph of the function where is the graph increasing/describing?
http://i.imgur.com/ENK7PLW.png?1
Please explain how I would solve this. I bet it's real simple but my brain just doesn't understand the question.
Thank You in advance
Click here to see answer by Fombitz(32388)

Question 902672: Find all solutions of the equation x^2 - 3 x+ 7 = 0 and express them in the form a + b i
Click here to see answer by Alan3354(69443)

Question 902749: How to solve the formula P=F/A for F? P for pressure, F for Force and A for Area

Click here to see answer by ewatrrr(24785)

Question 902805: Can someone please help me find the domain of the rational function:
x-1/7x+8
Click here to see answer by Alan3354(69443)

Question 902802: Please help me find the domain of
F(x) = 9/ x+2
Click here to see answer by MathLover1(20850)

Question 902801: Please help me find the domain of
F(x) = 8x + 6
Click here to see answer by MathLover1(20850)

Question 902860: Are my answers correct for the graph of the function. If not how would I solve?
http://i.imgur.com/KSZzm6b.png?1
Thank you
Click here to see answer by Alan3354(69443)

Question 902874: Please help me, need example. How to express this linear function f(x)=13x-4 in standard form?

Click here to see answer by richwmiller(17219)

Question 902908: Why am I getting this wrong? Function of a graph
http://i.imgur.com/VeWmsMX.png?1
Thank you
Click here to see answer by josgarithmetic(39618)

Question 902912: Please check my answers. Why am I getting these functions of graphs wrong?
http://i.imgur.com/SfdeGOn.png?1
and
http://i.imgur.com/o7PmcQY.png?1
Thank You
Click here to see answer by josgarithmetic(39618)

Question 902844: Is what I have correct and if not how is it figured out also confused about what the last part is asking.
Here is the graph of the function:
http://i.imgur.com/WtqZIje.png?1
Thank You
Click here to see answer by josgarithmetic(39618)

Question 902939: Find ((f(x))-f(a))/(x-a)
Let f(x)=2x^2+3x-7
Please show step by step solution. Thanks I appreciate your help!
Click here to see answer by josgarithmetic(39618)

Question 903054: RATE OF CHANGE PROBLEMS
A function is given. Determine the average rate of change of the function between the given values of the variable.
a. g(x) = 3 + 1/2x; x = 1, x = 7
b. f(z) = 5 − 2z^2; z = −2, z = 0
c. g(x) = 3/(x + 9); x = 0, x = h
Please explain how these are solved.
Thank You
Click here to see answer by ewatrrr(24785)

Question 903077: What are the steps to solving functions and notations?

Click here to see answer by harpazo(655)

Question 903071: Consider the graph:
http://i.imgur.com/xlXS606.png?1
Determine the average rate of change of the function between the indicated points on the graph
Please help!
Thank you

Click here to see answer by Fombitz(32388)

Question 903214: Fill in the blank with the appropriate direction (left, right, up, or down).
(a) The graph of y = f(x) + 2 is obtained from the graph of y = f(x) by shifting [????] 2 units.
(b) The graph of y = f(x + 2) is obtained from the graph of y = f(x) by shifting {????} 2 units.

Fill in the blank with the appropriate direction (left, right, up, or down).
(a) The graph of y = f(x) − 9 is obtained from the graph of y = f(x) by shifting [????] 9 units.
(b) The graph of y = f(x − 9) is obtained from the graph of y = f(x) by shifting [????] 9 units.

Fill in the blank with the appropriate axis (x-axis or y-axis).
(a) The graph of y = −f(x) is obtained from the graph of y = f(x) by reflecting in the [????].
(b) The graph of y = f(−x) is obtained from the graph of y = f(x) by reflecting in the [????].

How do I solve these?
Thank you
Click here to see answer by Alan3354(69443)

Question 903296: Can you help me with this math question, please?
- Write the equation so that y is a function of x.
14=7y-6x
So far, I've subtracted 6x from both sides so the equation looks like this: -6x + 14=7y
But when I try to divide -6x by 7, I get a weird decimal.
Click here to see answer by jim_thompson5910(35256)

Question 903319: Describe how the graph of each function can be obtained from the graph of f
Here is the question please help!
http://i.imgur.com/yMFWyuL.png?1
please help!
Click here to see answer by josgarithmetic(39618)

Question 903345: given the equation xy-5y=2x+3, show that y is a function of x and determine the domain in interval notation.
Click here to see answer by jim_thompson5910(35256)

Question 903331: The direction of the graph
Here is the questions please help!
http://i.imgur.com/OolBjVt.png?1
Click here to see answer by josgarithmetic(39618)

Question 903347: For f(x)=-3x^2+2x+1, find (f(4+h)-f(4))/h. Simplify completely.
Click here to see answer by josgarithmetic(39618)

Question 903445: PLEASE HELP!
Suppose the graph of g is given, describe how the graph of f is obtained:
Question here:
http://i.imgur.com/Mxl4xqN.png
Click here to see answer by Stitch(470)

Question 903442: How did they change the graph of
y = f(x)
by making it:
(a) y = 2f(x + 8) - 7
(b) y = 2f(x - 8) + 7
Click here to see answer by Edwin McCravy(20056)

Question 903436: I am having trouble with this question.
Let f (x) = x � 2x2 and h ≠0.
I wanted to know what f (x) + h would equal or at least how to start answering this question

Click here to see answer by Fombitz(32388)

Question 903474: f(z) = 5 − 2z^2; z = −2, z = 0
Please explain
Thank You
Click here to see answer by Fombitz(32388)

Question 903462: Find the range for the given domains g(K)= 5 k+7
Click here to see answer by Fombitz(32388)

Question 903304: Explain how the graph of g is obtained from the graph of f.
(1) f(x) = √x, g(x) = −√(x)+ 7
a. reflect about the x-axis, then shift down 7 units
b. reflect about the y-axis, then shift up 7 units

c. shift up 7 units, then reflect about the x-axis
d. reflect about the x-axis, then shift up 7 units
e. reflect about the y-axis, then shift down 7 units
(2) f(x) = √x, g(x) = √(-x)+ 7
a. reflect about the y-axis, then shift down 7 units
b. reflect about the y-axis, then shift up 7 units

c. reflect about the x-axis, then shift up 7 units
d. shift down 7 units, then reflect about the y-axis
e. reflect about the x-axis, then shift down 7 units

Please explain how this is solved Thank You!
Click here to see answer by stanbon(75887)

Question 903557: Population rate of change
Here is the questions:
http://i.imgur.com/SQzfEZa.png?1
Please explain thank you
Click here to see answer by josgarithmetic(39618)

Question 903567: Do I have this average rate of change of graph correct?
http://i.imgur.com/4CcBUsm.png?1
I put in 2 because:
the points are (1,2)(4,5)
and the slope m=y2-y1/x2-y2 so (4-2)/(5-1) = 2
Is 2 the correct answer?
Thank You
Click here to see answer by josgarithmetic(39618)

Question 903555: Please explain how to solve these rate of change problems.
a. h(t) = t^2 + 2t; t = −1, t = 5

b. g(x) = 1/x; x = 5, x = a

c. f(t) = 6/t; t = a, t = a + h

Click here to see answer by MathLover1(20850)

Question 903582: Do I have this rate of change problem correct?
f(x)=4-x^2; x=9, x=9+h
f(9+h)-f(9)/(9+h-9) = 4-(9+h)-4-(9)^2/h
=-162+h/h = -162 because the h's cancel out? Not sure if I did this correctly.
Please explain, thank you!
Click here to see answer by stanbon(75887)

Question 903635: I'm trying to find the indicated value of g(-12), g(-1), and g(1/4)the function given is g(x)=2x^2+5

Click here to see answer by Theo(13342)

Question 903742: Composite function, confused!
Let h(t) = 5t/(t-1) and k(t) = 9/(3t+7)
Find (h�k)(t) and simplify
I need someone to explain how to solve
Thank you
Click here to see answer by josgarithmetic(39618)

Question 903732: Please explain how this is solved:
Write H(x) if the function H multiplies a number by 5, adds 3, and then takes the square root.

Thanks
Click here to see answer by richwmiller(17219)

Question 903749: Let h(t) = 5t/(t-1) and g(t) = 2t+3/(t-1)
Find (h/g)(t) simplify and the domain for (h/g)
Please explain how this is solved, thank you
Click here to see answer by josgarithmetic(39618)

Question 903746: Find the domain of the function defined by f(x) = x/√(x+20) + √(5-x)
Write answer in interval form, please explain thanks!
Click here to see answer by josgarithmetic(39618)

Question 903875: Composite Function:
Let h(t) = 5t/(t-1) and k(t) = 9/(3t+7)
Find (h�k)(t) and simplify
h�k(t) = h( k(t))= h[ 9/(3t+ 7)]
Plug in 9/(3t+ 7) into the rule for h:
5[ 9/(3t+7)] / [ 9/(3t+7) -1] =
45/( 3t+ 7)
-----------
9/(3t+ 7) -1
I understand how to solve up until this point, what do I do next?
PLEASE HELP!
Click here to see answer by josgarithmetic(39618)

Question 904054: factoring 9(y-1)^2-25.
a) I'm sorry if I put this question in the wrong spot. I didn't know where to put it.
b) I know the answer is: (3y-8)(3y+2), but I don't understand how to get that.
Click here to see answer by ewatrrr(24785)

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