Which line is not perpendicular to the line y=1/3x-2 A. y=-3x
B. -6y=-2x+12
C. 4y=-12x+8
D. y-1=-3(x+2)

I’m stuck on this i don’t understand.

Which expression is rational? 6. , square root two, square root 14, square root 49

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.