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Determine the value of 
y, if 
x is 4.

y=x^(2)-1
Answer:

Determine the value of y y , if x x is 44.\newliney=x21 y=x^{2}-1 \newlineAnswer:

Full solution

Q. Determine the value of y y , if x x is 44.\newliney=x21 y=x^{2}-1 \newlineAnswer:
  1. Substitute xx into function: Substitute the given value of xx into the function.\newlineWe have the function y=x21y = x^2 - 1 and we need to find the value of yy when xx is 44.\newlineSubstitute x=4x = 4 into the function.\newliney=(4)21y = (4)^2 - 1
  2. Calculate y: Calculate the value of y.\newlineNow we perform the calculation.\newliney = 4214^2 - 1\newliney = 16116 - 1\newliney = 1515

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