Geometry
posted by Daniella on .
Three points are on a coordinate plane: A(1, 5), B(2, 4), and C(6, 4).
1.
Write an equation in pointslope form of the line with slope 1 that contains point C.
2.
Write an equation in pointslope form of the line that contains points A an B.
3.
Write an equation of the line that contains B and C.

1. C(6,4), m = 1. (X,Y).
m = y(4)/(X6) = 1,
Eq: Y+4 = 1(X6).
2. A(1,5), B(2,4),
m = (45)/(22) = 9/4 = 9/4.
A(1,5), X,Y),
m = (Y5/(X1) = (9/4)/1,
Cross multiply:
Eq: Y5 = 9/4(X1).
3. Similar to 1 and 2.