Can someone me with the matching ? idk

3. A
The relation between V and I at constant R is;
V=IR, so it is a direct linear relation.
4. A
This is another direct linear relation as P=IV
5. D
The relation between P, R, and V is P=, so P is inversely proportional to R.
6.B
The relation between P,I, and R is , so P is directly proportional to the square of I.

Please note that y:x relations are always straight lines while  relations are parabolic lines.

Hope this helps!