strate line thru 2 points...(-2,1.5) & (17/4, -2)...17/4=4.25
deltax=4.25-(-2)=6.25
deltay=-2 -1.5=-3.5
slope=deltay/deltax=-3.5/6.25=-0.46
projekt 1 point tu x=0...deltax=2
deltay=slope*deltax=-0.46*2=-0.92
y at x=0...1.5 -0.92=+0.58
so "y-intersept=0.58
formula...y=-0.46x +0.58