Question

Segment CD is shown on the graph.


Which shows how to find the y-coordinate of the point that will divide CD into a 5:2 ratio using the formula y = (y2 – y1) + y1?

y = (3 – 1) + 1
y = (3 + 4) – 4
y = (3 – 1) + 1
y = (3 + 4) – 4

Answer 1

Choose the option y = (3 + 4) − 4.

Using the correct section formula y = y1 + (5/7)(y2 − y1) with y1 = −4 and y2 = 3:
y = −4 + (5/7)(3 − (−4)) = −4 + (5/7)(7) = −4 + 5 = 1.