Question

use the points (1998,13.60) and (2003,19.00) to write the slope intercept form of an equation for the line of fit shown in the scatter plot

Answer 1

find the slope: m=(19.00-13.60)/(2003-1998)=1.08
so we have y=1.08x +b
next, use the point (2003, 19.00) to find b:
19.00=1.08*2003 +b =>b=-2144.24
so the equation is y=1.08x-2144.24