20. 23. ( ) ( ) = = −5x + 10 G x f x −2 −2 a. Slope = 0; = y-intercept −5x + 10 = 0 a. −2) b. Plot the (0, and draw a horizontal −5x = −10 line through it. = 2 x b. = 10 y-intercept c. average rate of change = 0 d. constant ( ) 21. = −6 + 12 f x x ( ) 24. = 2 − 8 g x x − = a. 2x 8 0 a. −6 + 12 = 0 x = 2 8 x −6 = x = 4 x −12 = 2 x b. = 12 y-intercept b. = y-intercept –8 ( ) = 3x + 12 − 1 + 4 g x x 2 22. = ( ) 25. H x 3x + 12 = 0 a. 3x = −12 − a. 1 + 4 = 0 x 2 = −4 x − = 1 x b. = 12 y-intercept −4 2 = 8 x b. = 4 y-intercept
20. G ( x ) = −2 23. f ( x ) = −5x + 10 a. Slope = 0; y-intercept = −2 b. Plot the (0, −2) and draw a horizontal line through it. a. −5x + 10 = 0 −5x = −10 x = 2 b. y-intercept = 10 21. c. average rate of change = 0 d. constant g ( x ) = 2 x − 8 24. f ( x ) = −6 x + 12 a. 2x − 8 = 0 2 x = 8 x = 4 a. −6 x + 12 = 0 −6 x = −12 x = 2 b. y-intercept = –8 b. y-intercept = 12 22. g ( x ) = 3x + 12 25. H ( x ) = − 1 x + 4 2 a. 3x + 12 = 0 3x = −12 x = −4 b. y-intercept = 12 a. − 1 x + 4 = 0 2 − 1 x = −4 2 x = 8 b. y-intercept = 4
Downloadable-Solution-Manual-for-Precalculus-Concepts-Through-1.docx