For each equation, determine whether the equation is true for all, some, or no values of x. Explain how you know. 1. 3.x = x+8
2. 2(x – 5) = 2x – 5
3. -3x = x• -3

2nd one in the first row is correct

0.02040816326

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