Answer:

Explanation:
Firstly finding 
So,

Substitute 

Exchange the values of x and y

Solving for y

Adding 5 to both sides

Dividing both sides by 10

Replace 

For x = -4


Answer:
5.125
Explanation:
formula for speed is distance/time distance measured in metres
It is based on the idea that all the present continents were on supercontinent.
When its temperature increases, the reactants have more kinetic energy so the frequency of effective collision increases, resulting in a faster rate of chemical reaction.