The coefficient of the third term in the expansion of the binomial (3x2 + 2y3)4

Geometry answer picture question pls . reason and statements

The line y = x + passes through (−3, 7) and is parallel to y = 4x − 1.

Consider the reaction 2x2y2+z2⇌2x2y2z which has a rate law of rate= k[x2y2][z2] select a possible mechanism for the reaction.