Question

A spider is climbing on a wall. it starts at point a, moves straight up 15 inches, to the right 7 inches and then straight down 6 inches to stop at point

b. if m represents the midpoint of ab, then find the coordinate that represents m.

Answer 1

Let x coordinate represent movement left-right and y coordinate represent movement up down.

We start at A(0,0).
Straight up -> (0,15)
Right -> (7,15)
Straight down -> (7,9)

We have B(7,9)

To find midpoint we use formula:

`( ( x_(1) + x_(2) )/(2) , ( y_(1) + y_(2) )/(2)) \\ ( ( 0 +7 )/(2) , ( 0 + 9 )/(2)) \\ ( (7)/(2) , (9)/(2) )`