15.5-y=7.9 ; y=8.4 is it solutions or not solutions

8.4 is not the solution

Step-by-step explanation:

The correct solution would be 7.1

y = 8.4 is not a solution

Step-by-step explanation:

15.5 - y =  7.9     Subtract 15.5 from each side

       -y = -7.6     Multiply each side by -1

        y =  7.6

y ≠ 8.4. The correct solution is 7.6 .

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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