Question

What is the function rule for the graph showing the ordered pairs (2,0), (3,1), (4,2), and (5,3)?

y = 2x
y = x + 2
y= x/2
y = x - 2

Answer 1

take the x of each point an substitute it in each equation and see which is true.

example
y = 2x
0 = 2(2) not true