dotted lines in graphs? (2 Viewers)

[aIlisonnnn]

when im drawing a graph in the exam, is it ok if i dont draw the dotted lines that indicate what x value corresponds to what y value (like in part c with (3, 1))? would that cause me to lose a mark or no? i assume that it wouldnt but im just double checking!!

sorry if this is a dumb question btw. i legit forgot everything in maths woooooo

 

[genenian]

ya its fine not to but plot a point