The domain of the function is

The range of the function is

Domain is where the function is defined.  In other words, all valid values of x that allows us to find y.

Range is values of y for the function.

Step-by-step explanation:

Here is the example of function , so domin is between 0 and positive infinity.  x cannot be negative.

The range is from 0 (because that's the lowest value of y) to positive infinity

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function

given the equation is 8+9z=-6, the first step would be to subtract the 8 from both sides:

8+9z-8=-6-8

since 8 minus 8 = 0, this would cancel out the 8. and since -6 minus 8 equals -14, the equation would look like this

9z = -14