what is the slope of the line that passes through ( 1,4) and (1,-3)

Answer:
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Step-by-step explanation:
The slope is found by using the formula
The points are (1,4) and (1,-3)
m = (y2-y1)/(x2-x1)
= (-3-4)/ (1-1)
= -7/ 0
When we divide by 0 the answer is undefined