Find a linear equation giving the number of employees in the air transportation industry in terms ofx, the number of years since 1987

(a) Find a linear equation giving the number of employees in the air transportation industry in terms ofx, the number of years since 1987

.

(b) Assuming the equation remains valid in thefuture, in what year will there be

430,000 employees of the air transportationindustry?

I have set up my equation:

x=527000 y=487000

Between 1987 and 2003 there are 16 months

Now, what next?????