Determine all values of h and k for which the system x+3y=h and −4x+ky=−9 has no solution.

2-digit numbers less than 91 which are 1 less than a multiple of 10

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?

Which of the following parabolas opens down?