Anyone know the answer to this?

Answer
The questions just asking to evaluate y = 8x + 3 for 5 values of x = 2, 4, 6, 8, and 10.
So:
y = 8x + 3
I'd look for a chart with the above values. Make sure that the chart has ALL these values though; I assume that some of the charts, like the one on the picture you sent, have very similar answers.