Which graph represents the linear function y=-2x+3

Ineed to know the rule for the sequence. plz !

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

The level of co2 emissions, f(x), in metric tons, from the town of fairfax x years after they started recording is shown in the table below. x 2 4 6 8 10 f(x) 26,460 29,172.15 32,162.29 35,458.93 39,093.47 select the true statement.