Randy walks his dog each morning. he walks 7/12 of a mile in 7 minutes. how many miles does he walk in 1 minute?

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Which of these lines passes through the point (1,-1) and has a slope of -3?

Ihave like no idea how to do any of this !