Find the vertex of the following parabolas​

Which is a true statement about an exterior angle of a triangle a. it is formed by two segments that are not sides of the triangle, b. it forms a linear pair with one of the interior angles of the triangle, c. it is complementary to one of the interior angles of the triangle. d. it is formed by two segments that are sides of the triangle.

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

What is the value of x in the following equation? -3x-2=2x+8