Which function is shown in the graph below? On a coordinate plane, an exponential function shows decay. It rapidly decreases into quadrant 1 and approaches y = 1 in quadrant 1. y = (one-half) Superscript x + 3 Baseline minus 1 y = (one-half) Superscript x minus 3 Baseline + 1 y = (one-half) Superscript x minus 1 Baseline + 3 y = (one-half) Superscript x + 1 Baseline minus 3

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.