Q. Determine the value of y, if x is 3 .y=x−518Answer:
Substitute x into equation: Substitute the value of x into the equation.We are given y=x−518 and we need to find the value of y when x is 3.Substitute x=3 into the equation.y=3−518
Simplify denominator: Simplify the denominator.Calculate the value inside the parentheses.3−5=−2So, y=−218
Divide to find y: Divide 18 by −2 to find the value of y. Perform the division to solve for y. y=−218y=−9
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