You have Y and you have X. F=function. Y is already a function of X because here's another way you write Y: F(X). So instead of putting Y you out F(X) which meanf "F or X" or "function of X".
Well, if you solve the equation for "y", you have "y" as a function of "x". Or you can do it the other way round; solve for "x", to get "x" as a function of "y" (the first option is more commonly used, though).
If you mean y = -9x + 6, or something similar: ANY equation that is solved for "y" can be considered a function (of "y", with respect to "x"). You an write the above in functional notation as: f(x) = -9x + 6
A function is any rule to assign a value (for example) to a variable "y", depending on the value of variable "x". Such a rule can be written in different ways; in algebra, it is common to write some equation, preferably one that is already solved for "y", such as: y = x2 + 3
1) Solve the equation for the desired variable. 2) Write it in function notation. For example, if y = 2x + 3, it is already solved for "y"; just rewrite it as f(x) = 2x + 3.
Y is the output of x, which is the input. So y= x + 2, y is the result of x + 2. Y is the dependent variable, and x is the independent constant.
The normal way of showing that y is a function of x is to write y = f(x).
you have to solve y to get the answer
You have Y and you have X. F=function. Y is already a function of X because here's another way you write Y: F(X). So instead of putting Y you out F(X) which meanf "F or X" or "function of X".
First you need to solve for y. So write 4x2+y=16 so y=16-4x2 Now write f(x)=16-4x2
Well, if you solve the equation for "y", you have "y" as a function of "x". Or you can do it the other way round; solve for "x", to get "x" as a function of "y" (the first option is more commonly used, though).
If you mean y = -9x + 6, or something similar: ANY equation that is solved for "y" can be considered a function (of "y", with respect to "x"). You an write the above in functional notation as: f(x) = -9x + 6
x + y = -2 y = -x - 2 f(x)= - x -2
A function is any rule to assign a value (for example) to a variable "y", depending on the value of variable "x". Such a rule can be written in different ways; in algebra, it is common to write some equation, preferably one that is already solved for "y", such as: y = x2 + 3
Y = X2 ===== This is a parabolic function because it passes the vertical line test. ( you should know what that test is )
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1) Solve the equation for the desired variable. 2) Write it in function notation. For example, if y = 2x + 3, it is already solved for "y"; just rewrite it as f(x) = 2x + 3.