Ms+Gravel's+Class+-+Group+2

**"How To..."**
===Group 2: Find the equation of a triangle's median from one vertex given 3 points. You may use triangle A(-4, 5), B(-3, 2) and C (0, 4) to demonstrate with the median from vertex A. ===

1. Find Midpoint BC. mp=(x1+x2/2, y1+y2/2) mp=(-3+0/2,2+4/2) mp=(-3/2,6/2) mp=(-3/2,3)

2. find slope from A to midpoint of opposite line. m= y1-y2/x1-x2 m=5-3/-4+3/2 =2/-8/2+3/2 =2/-5/2 =2/1/-5/2 2/1X2/-5 m=4/-5

3. Find equation using m=4/-5 nd A or Mp m=4/-5 m=5=4/-5x+b 5=4/-5(-4)+b 5=16/-5+b 5/1X5-16/5=b 25/5-16/5=b 9/5=b

In y intercept form:

5y=4/-5+9/5 5y/5=4/-5+9/5 5y=-4x+9

In Stndard Form 5y/5=4/-5x+9/5 =5y= -4x+94x+5y-9=0