Q. Find the inverse function in slope-intercept form (mx+b) :f(x)=−21x−7Answer: f−1(x)=
Replace with y: To find the inverse function, we first replace f(x) with y for simplicity:y=−21x−7
Swap x and y: Next, we swap x and y to find the inverse function:x=−21y−7
Solve for y: Now, we solve for y to get it in the form y=mx+b, which is the slope-intercept form. First, we add 7 to both sides of the equation:x+7=−(21)y
Add 7: Then, we multiply both sides by −2 to solve for y:−2(x+7)=y
Multiply by −2: Distribute the −2 on the left side of the equation:−2x−14=y
Distribute −2: Finally, we write the inverse function with y on the left side:f(−1)(x)=−2x−14
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