x + 6y = 12
You want the y-value to be on one side of the equation, so you have to subtract the x-value from both sides.
6y = -x + 12
Next, you divide both sides by 6, so that the y-value will be by itself.
y = -
+ 2
We know that the slope or the 'm' value is located before the x-value based on y = mx +b, therefore the slope is - 
X1=2-Square root 5 x2=2+ Square root 5
1 cm is regular
but 1 cm 2
means that you multiply 1 by 1 which is 1
for example if you have 15cm 2 you would multiply 15 by 15 and get 225
and 15 cm 3 would be 15*15*15 and you would get 3375
Answer:
r=d/t
r=360 cm / 9 sec= 40 cm per second