Which table represents a linear function?

Option 3 is correct.

Step-by-step explanation:

A function is said to be linear if there is same change in x gives same change in y which is also called slope that means if slope for each pair of the given table is same then function is said to be linear.

here in option 3rd we can find the slope for each pair of points its

and its same for each pair of point

therefore  option third is correct

B, I think

Step-by-step explanation:

Because the width of the bars does make it seem like Mike's grade is much higher in the second quarter. I don't think the answer is A because the intervals on the scale are already consistent, increasing by 0.05, same for C. It probably isn't D, since it is misleading, so I think B is the best option.

I'm not 100% sure though, sorry if the answer is incorrect.