Explicación paso a paso:
y-y1=[y2-y1/x2-x1](x-x1)
y-5=[-1-5/3/4-1/2](x-1/2)
y-5=[-6÷1/4](x-1/2)
y-5=-24(x-1/2)
y-5=-24x+12
y-5+24x-12=0
y+24x-17=0
y=-24x+17
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Explicación paso a paso:
y-y1=[y2-y1/x2-x1](x-x1)
y-5=[-1-5/3/4-1/2](x-1/2)
y-5=[-6÷1/4](x-1/2)
y-5=-24(x-1/2)
y-5=-24x+12
y-5+24x-12=0
y+24x-17=0
y=-24x+17