Answer:
Undefined
Explanation:
Slope form:
m (slope) = (y₂ - y₁)/(x₂ - x₁)
Let:
(x₁ , y₁) = (4 , 4)
(x₂ , y₂) = (4 , 9)
Plug in the corresponding numbers to the corresponding variables.
m = (9 - 4)/(4 - 4)
Simplify
m = (5)/(0)
m = undefined
Undefined is your answer, for there cannot be a 5/0. You cannot have 5 parts of nothing.
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