Identify proportional relationships from graphs exercise on IPad

Hi, I'm curious if anyone else has done the "Identify proportional relationships from graphs" exercise from the 7th Grade - Rates & proportional relationships unit. I got two wrong on the exercises involving plotting lines and then answering in multiple choice whether the relationship was proportional. It appears that when you click "no" it shows the correct answer but then marks the exercise wrong anyways. I have reviewed my graphing as I'm not sure if this is where the exercise is being marked wrong (I think it is correct based on my screenshots) but the lines are very small on IPad so it is very easy to misplace the points. Could we look at correcting this, or at the very least making sure that the graphs are larger/more reasonably spaced!