Answer:
A and D
Step-by-step explanation:
the slope is the number in front of the x, as in the formula y = a*x + b
the linear equations that have a negative value for a have a negative slope
(t2 - 8t - 7) - (t2 + 5t - 6)
=t2 - t2 - 8t - 5t - 7 + 6
= -13t-1
F(n)=1+-7. You put the F as the equation and 1 as the first term plus whatever you add