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Determine the value of 
y, if 
x is 9.

y=x^(2)-8
Answer:

Determine the value of y y , if x x is 99.\newliney=x28 y=x^{2}-8 \newlineAnswer:

Full solution

Q. Determine the value of y y , if x x is 99.\newliney=x28 y=x^{2}-8 \newlineAnswer:
  1. Identify Function and x Value: Identify the given function and the value of xx for which we need to find yy. We are given the function y=x28y = x^2 - 8 and we need to find the value of yy when xx is 99.
  2. Substitute xx into Function: Substitute the value of xx into the function to find yy. We substitute x=9x = 9 into the function y=x28y = x^2 - 8. So, y=928y = 9^2 - 8.
  3. Calculate yy: Calculate the square of 99 and subtract 88 from it to find yy.92=819^2 = 81, so y=818y = 81 - 8.
  4. Perform Subtraction: Perform the subtraction to find the final value of yy.y=818=73.y = 81 - 8 = 73.

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