Objective+18

Senior2 Objective 18 Distance between 2 points on a plane Q: Find the distance between the points P(1,-5) and Q(7,-5) So we start with the distance formula: Which is writen in our calculators as: SQRT((x2-x1)²+(y2-y1)²)

Example 1: So we get SQRT((7-1)²+(-5+5)²) SQRT((6)²+(0)²) SQRT(36+0) SQRT(36)=6 (all done in 1 step by calculator) There for 6 is the distance between points P and Q

Example 2: You can do part of it in your head if u want and start with the formula shown above and get: SQRT((6)²+(0)²) SQRT(36)=6