Answer:
the third one
Step-by-step explanation:
Let

Then it can be shown by using a right-angled triangle and the rule of Pythagoras that

Therefore
Answer:
p=-2
Step-by-step explanation:
Answer:

Step-by-step explanation:
Here we are given with two coordinates and asked to determine the distance between them.
Here we are going to use the distance formula, which is given as under

Where


Replacing these values in the distance formula




