Q. Find the inverse function in slope-intercept form (mx+b) :f(x)=25x−15Answer: f−1(x)=
Understand the problem: Understand the problem.We need to find the inverse function of f(x)=25x−15. 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 with y: Write the original function with y instead of f(x).Replace f(x) with y to make it easier to find the inverse.y=25x−15
Swap x and y: Swap x and y to find the inverse.To find the inverse function, we switch x and y. This gives us:x=25y−15
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 15 to both sides of the equation:$x + \(15\) = \left(\frac{\(5\)}{\(2\)}\right)y
Multiply by \(\frac{2}{5}\): Multiply both sides by \(\frac{2}{5}\) to solve for \(y\).\(\left(\frac{2}{5}\right)(x + 15) = y\)
Distribute and simplify: Distribute \(\frac{2}{5}\) on the right side of the equation.\(y = \left(\frac{2}{5}\right)x + \left(\frac{2}{5}\right)(15)\)
Distribute and simplify: Distribute \(\frac{2}{5}\) on the right side of the equation.\(y = \left(\frac{2}{5}\right)x + \left(\frac{2}{5}\right)(15)\)Simplify the equation.\(y = \left(\frac{2}{5}\right)x + 6\)This is the inverse function in slope-intercept form.
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