Answer:
-3 units / s/s.
Step-by-step explanation:
Acceleration = change of velocity / time
= 0 - 12 / 4
= -3 units /s/s.
Note: negative acceleration = deceleration.
The formula of a slope:
We have the points (4, -4) and (k, -1) and the slope m = 34.
Substitute:
3q-9=6
3q=9+6
3q=15
q=5
1.2a+a=33
2.3a=33
3.a=11