In order to develop an equation, let's use the slope-intercept form of the linear equation:

Using the points (3, 13.5) and (5, 18.5) from the table, we have:

Subtracting the second and the first equation:

Now, finding the value of b:

So the equation that represents this table is y = 2.5x + 6
Looking at the options, the correct one is E (none of the above).
The point (19, -4) is in quadrant 4. I hoped this helped!
A few are 0.250 0.2500 0.25000
The are all equivalent because just adding zeroes on the end doesn't change the value of the decimal.