Which of the following sets of ordered pairs is not a direct variation?
a. (0, 0); (-2, 4); (3, -6)
b.(1, 1); (-2, -2); (3, 3)
c.(10, 2); (15, 3); (20, 4)
d.(0, 0); (1, 3); (2, 4)

1. what is the measure of ∠abc? what is the measure of ∠abd?

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.