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

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Question 593787: I have an algebra question. On my worksheet, it says "Determine a relationship between the x- and y-values. Write an equation." I know how to do that, but for the second problem, the ordered pairs are (2,3), (3,5), (4,7), and (5,9). I put them in a table and it looks like the relationship is a sequence, because as you go up, you add 1 to 2 to make 3, and then you add 2 to 3 to make 5, and so on. How would you write this as an equation? (i.e. y=x+3)
This is what the problem looks like:
x 2 3 4 5
y 3 5 7 9

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Question 593859: Given the function f(x) = 16x + 9, evaluate f(16).
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Question 594236: Find g(1) if g(x) = x^2 + 1
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Question 594275: If a ball is dropped from the top of a 256-ft building, then the formula
h(t)= 256-16t^2
expresses its height h(t) in feet as a function of the time t in seconds.
1.Find h(2), the height of the ball 2 seconds after it is dropped.
2.Find h(4).

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Question 594253: Find f(-7) if f(x) = 2x + 8
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Question 595045: What is the following function rule: input is 1,2,3,4,5,6. and output is 4,8,16,32,64,128
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Question 595513: i would like to know the steps to solve the equation x(x-1)=6 i know the answer is supposed to be (-2,3) but I don't know the steps to solve it
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Question 595516: i would like to know the steps to solve the equation x^4-3x^2-4=0 i know the answer is supposed to be (-2,2) but i would like to understand how it is solved so i can solve a similar problem myself
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Question 595823: Please help me find an equation of the line through (-2,4) which is perpendicular to the line y-3x=2
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Question 595823: Please help me find an equation of the line through (-2,4) which is perpendicular to the line y-3x=2
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Question 595821: How would I find an equation of the line throught (2,2) that is parallel to the line passing through (4,5) and (10,-2)?
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Question 595820: Please help me find the slope and y-interecept of the line y= -2/3x-7
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Question 595818: how would I find an equation of the horizontal line through the point (5, 12)
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Question 595811: how would I determine whether the function y= 1/x is symmetric with respect to the axis and origin?
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Question 595817: Please help me find an equation of the line through (5,-3) and (10,7)
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Question 596007: How do I find the perimeter of the triangle whose vertices are (4,10), (-6,2), and (-6, 8) by simplifying without using decimals?
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Question 596299: Find functions f and g such that h = f ◦ g
h(x) = sin (x^2+1)

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Question 596299: Find functions f and g such that h = f ◦ g
h(x) = sin (x^2+1)

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Question 595605: if f(x)= x^2+3, find f(5)
could you also show how you figured it out?

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Question 596537: what is the domain of x squared + 3x
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Question 596573: good day sir/ma'am. my question is this, what is the function with the ff. points (3,0),(1,-1),(2,5),(4,1) tnx.
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Question 596778: the domain of 2 square root of x is?
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Question 596778: the domain of 2 square root of x is?
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Question 596799: 1)The equation defines a one-to-one function f. Determine f -1 and verify that f f -1 and f -1 f are the identity function.
y=9x-9
f-1=
f *f -1 = f -1 *f =
2)Let f(x) = x2 − 8 and g(x) = 2x − 2. Find the value, if possible. (If not possible, enter IMPOSSIBLE.)
(f − g)(-5) =
3)The function f defined by the given equation is one-to-one on the given domain. Find f -1(x).

4)Let f(x) = √x + 7 and g(x) = x2 − 7. Determine the domain of the composite function and then find the composite function.
(f * g)(x)=
5)Let f(x) = 2x − 7 and g(x) = 7x − 2. Find the value.
(g * f)(-2) =

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Question 596955: Can someone help me solve f(x)=x^2+3x+2 for f(2u)
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Question 596955: Can someone help me solve f(x)=x^2+3x+2 for f(2u)
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Question 597843: If f(x) = 7(x - 2) + 4(x + 1), what is f(2)?
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Question 597848: What are the factors of S squared-15s+44

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Question 597983: Using the given points, determine the slope.
(8, 1) and (8, -4)

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Question 598122: How do I graph this g(x)=2x+5
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Question 598193: How do you find the range of this function?
f(x)=3x+2 that has the domain of {-1,2,3}

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Question 598416: Why is rounding to the nearest tenth a function?
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Question 598416: Why is rounding to the nearest tenth a function?
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Question 598417: Function A pairs each integer with its absolute value. What is the range?
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Question 598585: Find three ordered pairs that satisfy the equation.
y = 5x - 6
here are numbers already given (0, ) (1, ) (2, )
please show me step by step
thank you

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Question 598961: use the graph y=-x^2-3x+4 to help solve the inequality -x^2-3x+4>0 ?
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Question 598957: 1)write y=-x^2-3x+4 in the form of y=a(x-p)^2+q?
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Question 598960: calculate the point of intersection of graph y=-x^2-3x+4 and x+y=4 ?
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Question 599964: 3x(x-8)=0 how do i do this using the zero factor property
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Question 600562: Find the indicated function value If g(x)=x^3-x find g(-1)
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Question 601031: finding the numbers that are not in the domain of the function?
f(x)=x/x-7
So i set x-7=0
so x=7
So therefore it can't be 7, it cant be domain so it would be
{x|x#7} right? but it keeps telling me i am wrong. what am i doing wrong??

Click here to see answer by jim_thompson5910(35256) About Me 

Question 601073: I am trying to help my younger brother and I just don't seem to understand this, can you please assist me?
Please help me solve this:
y is directly proportional to x^4 and y = 3 when x = 1/2. Find the formula for y as a function of x. Find the output value when the input is 2. What input values will give an output value of 48?

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Question 601152: is the relation y=40x+30 a function? why or why not
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Question 601294: Is y a function in y-3=x?
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Question 601405: i need help with this ...identify the zeros and vertical asymptotes of g(x)=x squared+2x-3over x-2

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