In a reflection across the x-axis a given coordinate (2, -1) transforms itself into which of the following? A. (-2, 0)
B. (-2,1)
C. (0,1)
D. (-2,1)​

step-by-step explanation:

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correct answer is b. 27/8

step-by-step explanation:

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

x:       y:  

-1         4

0         4

1         6

2         18

3         20