Since the "size in square feet" is on the X-axis it is represented by the X in the equation. And Y is expected property tax
It is giving you a X-value of 3100. So you just have to plug 3100 into the X spot and solve for Y
y=.392(3100)+638.118
y=1853.318
So the third answer.
M= (y2-y1)/(x2-x1)
Plug in the points. (2,3) (9,7)
m= (7-3)/(9-2)
m= 4/7
Slope= 4/7
I hope this helps!
~kaikers
