The variable y is directly proportional to the variable x. If y = 9 when x = 5, what is the value of y when x = 20?

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

The acceleration of an object due to gravity is 32 feet per second squared.what is acceleration due to gravity in inches per second squared?