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McGraw Hill Glencoe Algebra 1, 2012

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McGraw Hill Glencoe Algebra 1, 2012 View details

7. Inverse Linear Functions

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Exercise 23 Page 268

Exchange x and y, then solve for y.

f^(- 1)(x)=-5x+15

Practice makes perfect

To find the inverse of the given equation, we exchange x and y and solve for y. Given Equation & Inverse Equation x+5 y=15 & y+5 x=15The result of isolating y in the new equation will be the inverse of the given function.

y+5x=15

LHS-5x=RHS-5x

y=- 5x+15

Finally, we write the inverse of the given equation in function notation by replacing y with f^(- 1)(x) in our new equation. f^(- 1)(x)=- 5x+15

Subchapter links

Check Your Understanding p.267

Practice and Problem Solving p.267-269

H.O.T. Problems p.269

Standardized Test Practice p.270

Spiral Review p.270

Skills Review p.270