DISTANCE FORMULA
To find the distance between (x 1 , y 1 ) and (x 2 , y 2 ):The distance from (0, 1.5) to (–1, 0.5) is
You could use your calculator to get a decimal approximation of but you
should be able to spot it as (B) 1.414. The answer is (B).
GEOMETRY ON THE GRID
Finding midpoints and distances is basically a geometry thing. Here’s another
example of a coordinate geometry question that’s essentially plane geometry
transferred to the coordinate plane.
Example 2