An identity is an equation that is always true, for any value of the variable or variables. Here are some examples:
x + x = 2x
a + b = b + a
x1 = x
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Identity: An equation satisfied by every number that is a meaningful replacement for the variable. Example: 3(X+1)=3X+3Conditional Equation: An equation that is satisfied by some number but not others, such as 2X=4
No, it's the other way round - an equation that's true for every value of the variable(s) is called an identity. Of course, an identity is also an equation.
y=x2; if you graph it, it is not a line.
Equation: 5+(x-1)^2 Example: Rainbow
x+5=10 and x+5=15