A graph that represents 2x-3y=9

Which of the following is the correct ratio for converting kilograms to grams

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.

If 5x - 2 = -12, then x = a) -50 b) -4.4 c) -2.8 d) -2