Question 678733
Two generic points that define a straight line are (x1, y1) and (x2, y2)


In this case, (x1, y1) = (6, -7), which means x1=6 and y1=-7


and (x2, y2) = (4, -8), which means x2=4 and y2=-8


So x1=6, y1=-7, x2=4, and y2=-8.


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Now use the slope formula



m = (y2-y1)/(x2-x1)



m = (-8-(-7))/(4-6)



m = (-8+7)/(4-6)



m = (-1)/(-2)



m = 1/2



So the slope of the line that passes through the two points is  1/2