Answer:
1
Step-by-step explanation:
Rise/run
Answer:
Ur mummm u cheater
Step-by-step explanation:
It is not appropriate because it isn't reflective of the points on the right side and its deviation from the points, which has an obvious positive correlation, is too great to be a line of best fit. To make it better, make it less steep and start the line close to the origin.
We're given an inner product defined by
That is, we multiply the values of 
and 
at 
and add those products together.
The inner product is
To find the norms 
and 
, recall that the dot product of a vector with itself is equal to the square of that vector's norm:
So we have
Finally, the angle 
between 
and 
can be found using the relation
