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Line cd contains points a(4,-7)and b(4,8). The slope of the line cd is

User Hyunju
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the Answer is (0,4).

User Younes Zeboudj
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(4,-7)(4,8)....little tip...notice how the x's are both the same number, 4....this means the line is vertical with an undefined slope.

If the y's would have been the same number, then the line would have been horizontal with a 0 slope.
User Khaleelah
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