(a).

 The independent variable is the number of hours spent playing video games and cumulative grade-point average is the dependent variable because we are using number of hours playing video games to predict (or explain) cumulative grade-point average.

(b).

Observe the table.

Graph:

Plot the points in cartesian plane .

(c).

(d).

(e).

(a).

(b).

(c).

(d).