State true or false :

if the point (2, a) lies on the line 2x - y = 3, then a = 5.

For what value of k will the point (3, -k) lie on the line 9x + 4y = 3?

Does the line 3x – 5y = 6 bisect the join of (5, -2) and (-1, 2)?

The line y = 3x - 2 bisects the join of (a, 3) and (2, -5), find the value of a.