To evaluate a function means to replace the variable with some value, and calculate the value of the function.
For example, in the parabola y = x2 (or, using functional notation, f(x) = x2), if you replace x with 10, and calculate x2, you are evaluating the function for that specific value.
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Substitute that value of the variable and evaluate the polynomial.
You set x = 0 and evaluate the polynomial. Note that this should be "y-intercept" in the singular, not in the plural.
To "evaluate" an expression, you need to know the value for the variables.
"Evaluate" means to calculate - find out what value it has.
You evaluate in exponenets by writting out the exponents like 6*6*6 = you have to find the product of your problem.