Need help asap. What's the answer?​

The speed of a falling object increases at a constant rate as time increases since the object was dropped. which graph could represent the relationship betweent time in seconds, and s, speed in meters per second? speed of a falling object object over time

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

What is the measure of ac? 5 units 13 units 26 units 39 units 3x- 2b 6x + 9