Q. Find the inverse function in slope-intercept form (mx+b) :f(x)=−52x−16Answer: f−1(x)=
Understand the problem: Understand the problem.We need to find the inverse function of f(x)=−52x−16. The inverse function, denoted as f−1(x), will undo the operation of f(x). To find the inverse, we will switch the roles of x and y and then solve for y.
Write the function: Write the function f(x) as an equation with y. Replace f(x) with y to get the equation in terms of x and y. y=−(52)x−16
Swap x and y: Swap x and y to find the inverse.To find the inverse function, we switch x and y in the equation.x=−(52)y−16
Solve for y: Solve for y.We need to isolate y on one side of the equation to solve for the inverse function.First, add 16 to both sides of the equation:$x + \(16\) = -\left(\frac{\(2\)}{\(5\)}\right)y
Multiply both sides: Multiply both sides by \(-\frac{5}{2}\) to solve for \(y\). To isolate \(y\), we multiply both sides by the reciprocal of \(-\frac{2}{5}\), which is \(-\frac{5}{2}\). \(\left(-\frac{5}{2}\right)(x + 16) = y\)
Distribute \(-\frac{5}{2}\): Distribute \(-\frac{5}{2}\) on the left side of the equation.\(\newline\)Now we distribute \(-\frac{5}{2}\) to both \(x\) and \(16\).\(\newline\)\(y = \left(-\frac{5}{2}\right)x - \left(\frac{5}{2}\right)\cdot16\)
Simplify the equation: Simplify the equation.\(\newline\)We need to multiply \(-\frac{5}{2}\) by \(16\) to simplify the equation.\(\newline\)\(y = \left(-\frac{5}{2}\right)x - \left(\frac{5}{2}\right)\cdot16\)\(\newline\)\(y = \left(-\frac{5}{2}\right)x - 40\)
Write the inverse function: Write the inverse function in slope-intercept form.\(\newline\)The inverse function in slope-intercept form is:\(\newline\)\(f^{-1}(x) = \frac{-5}{2}x - 40\)
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