Find the slope of the line that goes through the given points. (-2,1) and (1/4,5)

Answer 1

This a linear equation system

I) 1 = a*(-2) + b
II) 5 = a*(0.25) + b

Answer 2

y2-y1 5-1 4 1
_____= _________=_______=______
x2-x1 1/4-(-2) 1/4+2 9