I need help with this slope proplems

What is the slope of a line that is perpendicular to y = 3x + 1

Identify the function that contains the data in the following table: x     -2         0         2         3         5     f(x)     5         3         1         2         4     possible answers: f(x) = |x| + 1 f(x) = |x - 2| f(x) = |x - 2| - 1 f(x) = |x - 2| + 1

Simplify the following expression 48^1/2