Pleas help me, this is confusing.

1. are the triangles similar and if so why? what is the value of x? show your work.

Which expression can be used to determine the slope of the line that passes through the points -6, three and one, -9

Choose the linear inequality that describes the graph. the gray area represents the shaded region. a: y ≤ –4x – 2 b: y > –4x – 2 c: y ≥ –4x – 2 d: y < 4x – 2