Can anyone help me out with this question

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?