Answer:
y = 2x - 1
Step-by-step explanation:
Consider the differences between consecutive values of y. If constant then this value is the multiplier.
1 - (- 1) = 3 - 1 = 5 - 3 = 7 - 5 = 9 - 7 = 2 ← constant difference, hence
y = 2x
Given the point (0, - 1 ) then we require to subtract - 1, that is
y = 2x - 1 ← equation relating x and y
