Question

I really need help on these 2 questions

Answer 1

Question is poorly worded.  Should read, "find the length of the line segment connecting the two dots, in terms of a, b, c and d."

Use the Pyth. Theorem:

(change in x)^2 + (change in y)^2 = (segment length)^2

Then:

(segment length)^2 = (d-b)^2 + (c-a)^2


and (segment length) = sqrt [ (d-b)^2 + (c-a)^2 ]