3. If a system of linear equations has zero solutions, then the graph of the system is:
a. intersecting lines b. perpendicular lines c. the same line d . parallel lines.
4. If the result, when solving a system by either elimination or substitution, is 3 = 3, the solution is:
a. (-5, 3)
b. no solutions c. (3,-5)
d. infinitely many