Explain hard to tell whether (2,-1) is a solution of the equation Y= 3X -2 without using the graph

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog

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.

Pls never taught i’m really confused and i rlly need