On a coordinate plane, triangle L M N has points (negative 1, 2), (negative 1, negative 4), and (3, negative 4). What is the area of triangle LMN?

12 square units
14 square units
15 square units
24 square units

15 point ! ~ see if you know the answer to both you!

What is the effect on the graph of the function f(x)=x when f(x) is replaced with -f(x)+4

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?