Two Points

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Slide2: 

(3,2) and (1,4) are the points I will use. M=1/2 pt= (3,2) M=2 pt=(1,4) y-y2=m(x-x2) y-y2=m(x-x2) y-2=1/2(x-3) y-4=2(x-1)

Point-Slope form (cont.): 

Point-Slope form (cont.) I will now change point-slope into slope-intercept. Y-2=1/2(x-3) y-4=2(x-1) Y-2=1/2x-1.5 y-4=2x-2 Y-2+2=1/2x-1.5+2 y-4+4=2x-2+4 Y=1/2x+1/2 y=2x+2 M=1/2 b=1/2 M=2 b=2 pt=(0,1/2) pt=(0,2)

Slide4: 

I will now change Slope-Intercept into Standard Form Y=1/2x+1/2 y=2x+2 Y-1/2x=1/2x-1/2x+1/2 y-2x=2x-2x+2 -1/2x+y=1/2 -2x+y=2 A:-1/2 (-2)=1 A:-2 (-1)=2 B:1 (-2)=-2 B:1 (-1)=-1 C:1/2 (-2)=-1 C:2 (-1)=-2 x-2y=-1 2x-y=-2