Identify whether each phrase is an expression, equation or inequality.

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3