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Determine the value of y, if x is -9 . y=x^(2)-12 Answer:

Determine the value of y y , if x x is −9-9 .\newliney=x2−12 y=x^{2}-12 \newlineAnswer:

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Full solution

Q. Determine the value of y y , if x x is −9-9 .\newliney=x2−12 y=x^{2}-12 \newlineAnswer:
  1. Substitute xx into equation: Substitute the value of xx into the equation.\newlineWe are given the equation y=x2−12y = x^2 - 12 and told that xx is −9-9. We substitute −9-9 for xx in the equation to find yy.\newlineCalculation: y=(−9)2−12y = (-9)^2 - 12
  2. Calculate square of −9-9: Calculate the square of −9-9. The square of −9-9 is 8181 because (−9)×(−9)=81(-9) \times (-9) = 81. Calculation: y=81−12y = 81 - 12
  3. Subtract 1212 from 8181: Subtract 1212 from 8181. We perform the subtraction to find the value of yy. Calculation: y=81−12=69y = 81 - 12 = 69

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