Answer: Slope: 2 & Y-int: -6.
Explanation:
I will try to explain it in my own simple way for you to understand, however, I may be wrong.
The form, y=mx+b, think of f(t) as y, the 2t as m, the t as x, and the -6 as the y-intercept. Since the -6 is the opposite of +b, in the y=mx+b, it would be -6.
Hope this helped.