Which of the following sets of ordered pairs is a function? A: (2,1),(2,2),(3.4),(5,6)
B:(-2,-1),(1,2),(3,4),(1,5)
C:(1,2),(2,2),(3,3),(2,4)
D: (1,1),(2,1),(3,2),(4,4)

The table below represents a linear function f(x) and the equation represents a function g(x): x f(x) −1 −5 0 −1 1 3 g(x) g(x) = 2x − 7 part a: write a sentence to compare the slope of the two functions and show the steps you used to determine the slope of f(x) and g(x). (6 points) part b: which function has a greater y-intercept? justify your answer. (4 points)