He didnt go over how to do it in class.

They are both linear

Step-by-step explanation:

1.

Use rise/run to find the slope of the line.

rise=21.8

run=1

therefore, the slope is 1/28. You can use that to graph the line. If the line meets the points on your table, it is linear. It does. The equation of the line would be y=21.8x.

2.

We can use the same process as before.

rise=7

run=2

Therefore, slope is 7/2. When this line is graphed it meets all the points, so it is linear.

Alteratively, you could graph the points first and then see if you get the same slope.

practice. practice. practice.