Determine which pair of functions are inverse functions. (a) f(x) = x - 4; g(x) = x + 4
(b) f(x) = x – 4; g(x) = x-4 over 4
© f(x) = x - 4; g(x) = 4x – 1
(d) f(x) = 4x – 1; g(x) = 4x + 1

Use a calculator to verify that σ(x) = 62, σ(x2) = 1034, σ(y) = 644, σ(y2) = 93,438, and σ(x y) = 9,622. compute r. (enter a number. round your answer to three decimal places.) as x increases from 3 to 22 months, does the value of r imply that y should tend to increase or decrease? explain your answer. given our value of r, y should tend to increase as x increases. given our value of r, we can not draw any conclusions for the behavior of y as x increases. given our value of r, y should tend to remain constant as x increases. given our value of r, y should tend to decrease as x increases.