Chapter 1: Introductions

Question 1

Midpoint formula

Answer 1

X1+X2 Y1+Y2
——– , ———
2 2

Question 2

Distance formula

Answer 2

Let A= (X1Y1) and B= (X2Y2) be points in a coordinate plane. The distance between A and B is AB equals the square root of X2-X1 squared plus
Y2-Y1 squared.

Question 3

Midpoint

Answer 3

The point of intersection in a line segment