1,744 Answered Questions for the topic Functions

Functions

12/14/18

If f(x)= -5 what is x
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Functions

12/11/18

Rearrange the equation so qq is the independent variable. 9q-4=3r-69q−4=3r−6
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Functions Math Curves

12/06/18

if f(x)= (x-2)^2 (2x+1) what is f(x+1) please show step by step
i have the answer which is f(x+1)= (x-1)^2 (2x+3) but i don't understand how they got it
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Functions Math

12/05/18

Straight line equation
Consider the straight line equation x+2y-4=0.a) The line is shifted 2 units left. Find the equation of the new line.b) The original line is shifted 1 unit down. Find the equation of this third line.
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Functions

12/04/18

adding and subtracting functions
if f(x) = 5x - 2 and g(x) = 2x + 1 , find ( f - g )(x)
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Functions

11/30/18

why can't the x-value in a function be repeated?
working on a school project and need to explain why the x-value can't be repeated. also if you can, can you explain why the y-value can repeat.
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Functions

11/30/18

Find ff(x) when f(x)=5-3x
Having trouble solving this
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11/24/18

Need help with these Polynomial and Rational Functions Question?
1. Find all complex zeros of f(x)= x^4-8x^3+26x^2-32x+13, given that you know one of the zeros is 3+2i. Use the zeros to write the function in factored form. 2. Identify any asymptote(s) and find... more
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Functions Precalculus

11/20/18

Need help with these Polynomial and Rational Functions Question?
1. Find all complex zeros of f(x)= x^4-8x^3+26x^2-32x+13, given that you know one of the zeros is 3+2i. Use the zeros to write the function in factored form. 2. Identify any asymptote(s) and find... more
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11/19/18

Need help with these Polynomial and Rational Functions Question?
Given the function f(x)=x(x+2)^4(x-4)^4(x-2)^3(x+5)^3, list the zeros of f(x), corresponding multiplicities, and whether they touch or cross the x-axis
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Functions

11/09/18

the output is one third the input
how do i write a function rule
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Functions Math

11/09/18

The output is 2 less than the input
how the heck do i write a function rule for that
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Functions Algebra 2

11/09/18

Find the equation for a parabola with vertex at (7,2) and a y-intercept of (0,16)
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Functions Equations Explain

11/09/18

Consider the two equations 𝑦=3(𝑥+4)2-3 and (𝑥+2)2+(𝑦-2)2=16

Consider the two equations 𝑦=3(𝑥+4)2-3 and (𝑥+2)2+(𝑦-2)2=16 . How many solutions are there to this system? Without solving, give a convincing argument explain why there are that many solutions to... more
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Functions Math Equations Area

11/09/18

A rectangular pond 6 meters by 5 meters is going to be built.
A rectangular pond 6 meters by 5 meters is going to be built. The builders want the pond to be surrounded by a walkway 𝑥 meters wide.A.) Let (𝑥) represent the width and 𝑙(𝑥) represent the length of... more
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Functions Algebra 2

11/04/18

Quadratic function help. PLZZZ help
The graph of  is a vertical translation of the graph of the parent linear function. A right triangle with an area of 8 square units is formed by the x-axis, the y-axis, and the graph of . Write an... more
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Functions Systems Lines

11/02/18

Graphing a line given its slope and y-intercept.
slope: 8 y intercept: -8
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Functions Transformation

10/29/18

What kind of transformation converts the graph of f(x)= - 4x^2–1 into the graph of g(x)= - 8x^2–2?
What kind of transformation converts the graph of f(x)= - 4x^2–1 into the graph of g(x)= -8x^2–2?
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10/26/18

ii. How many three-letter codes are there using letters A, B, C, and D if no letter can be repeated?
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Functions

10/19/18

f(x)=2x+3 , f(2x+3)=5x. What is the value of 3x^2
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Functions Tax Preparation

10/19/18

Piece Wise Function for Taxes
The total income is $35000The tax rate on all taxable income is 15% which makes the taxable income is $24600 (I think)Write a function to model the total tax paid, T(x), with a total income of x... more
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Functions Graph Domain

10/17/18

Functions, Domain, Independent/Dependent

The annual cost of health insurance H as a function of age a is given by the function H(a)=22.6a-119.2 for 15 is less than or equal to a is less than or equal to 90.What are the independent and... more
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Functions

10/13/18

What is the range of function f(x)=x(x^2-1)÷x^4-x^2+1
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Functions

10/12/18

Functions find (f⋅g)(x) and (f⋅g)(0)
For the functions f(x)=x^2−x+3 and g(x)=3x^2−10x−5, find (f⋅g)(x) and (f⋅g)(0).
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10/11/18

Calculus Question
Suppose f is continuous on [0,8] and the only solutions of the equation f(x)=2 are x=1 and x=7. If f(3)=-14, explain why f(5)<2
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