Well, look for a continuing pattern. Once you find one that makes sense for each value, write it into an equation....look at example below x- 2,4,6,8 y- 4,16,36,64 the rule for this function is y=x squared.
how you get x to equal y. it is usually in a graph
A function is a rule which assigns exactly one output f(x) to every input x.
The rule, using a polynomial function of the lowest order is Un = (12n3 - 36n2 - 145n + 413)/25
Remember in multiplication that A x B is the same as B x A? Well using this rule we can write that 13 x 2 = 26 and 2 x 13 = 26.
10y = x ======
f(x)=.39x
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
Well, look for a continuing pattern. Once you find one that makes sense for each value, write it into an equation....look at example below x- 2,4,6,8 y- 4,16,36,64 the rule for this function is y=x squared.
The normal way of showing that y is a function of x is to write y = f(x).
x2 - y2 = (x + y)(x - y) is an identity, not a function.
Yes, and the constant is 7.
You need more than one pair of values in order to answer the question.
y = x/10
you write it like this (x,y) ----> (-x+4, y-5)
how you get x to equal y. it is usually in a graph
The rule of a function in math is what relates the input value to the output value. For example, if f(x) = x2, the "function rule" is to square the input value to get the output value.