6. (3 pts) Prove that quadrilateral DEFG with vertices D(-5, 6), E(3, 2), F(-1, -3), and G(-9, 1) is a parallelogram.
NUMBER 6 PLEASE SOMEONE HELP

Describe all the numbers that when rounded to the nearest thousand are 645,000

Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

When a rectangle is dilated, how do the perimeter and area of the rectangle change?