Use the data points (28, 3.1) and (10, 2.2) to find an equation of the line through these points.
+36923 Equation of a line is y= mx + b Where 'm' = slope and 'b' = y-axis intercept (where x = 0)
First find slope
m = rise/run = ( y1-y2 ) / ( x1-x2)
m= (3.1-2.2)/ (28-10) = .9/18 = .05
So y = .05 x + b Use ONE of the ordered pairs to calculate 'b'
3.1 = .05(28) + b yields b = 1.7
So y = .05x + 1.7 is the line equation.
