Copy and complete: to find the length of ab with endpoints a(-7,5) and b(4,-6), you can use the ?

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.

Ranck the following in order from least precise to most precise

What is the difference between a linear interval and a nonlinear interval?