-3x + 4y = -15 and 4x - y = -19

Chandler was a caretaker at the state zoo. he noticed that the number of animals adopted by the zoo increased at a constant rate every year since 2010. which of the following graphs shows the slowest rate at which the animals in the zoo were adopted?

State if the two triangles are congruent. if they are, state how you know?

4+(2+x) can you me solve this problem