Respuesta :

m=y2−y1/x2−x1m
where you have just 2 points on the line y2 and x2 will be the same point (70) and y1 and x1 will be the same point (-15).

m=(70)−(−15)/(70)−(−15)=85/85=1

Slope of the the line is m=1

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