Slope=∆rise/∆run
A=∆velocity/∆time
A=slope of velocity
X:
Slope=12/6
Slope=2
A=2m/s²
Y:
Slope=0
A=0m/s²
Z:
Slope=4/4
Slope=1
A=1m/s²
æ:
Slope=-16/4
Slope=-4
A=-4m/s²
