Y/x=k
when y=9, then x= -3
9/-3=-3
⇒ k= -3
Step-by-step explanation:
Follow PEMDAS

P: Parentheses
E : Exponents
M: Multiplication
D: Division
A: Addition
S: Subtraction

Question 2

Answer:
Yes. Every unique input has a unique output.
Step-by-step explanation:
Since every input has a different output, therefore it's a function. It's not a function when the input have more than 1 output. When graphing, make sure you take the vertical line test to see whether or not the graph is a function.
Answer:
60
Step-by-step explanation:
V = lwh
V= 4x3x5
V=60