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What is the slope of the line 
x=9 ?
Choose 1 answer:
(A) 0
(B) 9
(c) 10
(D) Undefined

What is the slope of the line \newlinex=9x=9?\newlineChoose 11 answer:\newline(A) 00\newline(B) 99\newline(C) 1010\newline(D) Undefined

Full solution

Q. What is the slope of the line \newlinex=9x=9?\newlineChoose 11 answer:\newline(A) 00\newline(B) 99\newline(C) 1010\newline(D) Undefined
  1. Line Equation Form: The equation of the line is given in the form x=a constantx = \text{a constant}. This form indicates a vertical line.
  2. Undefined Slope: The slope of a vertical line is undefined because the change in yy is not associated with any change in xx (the line goes straight up and down).
  3. Vertical Line Solution: Since the line is vertical and the slope is undefined, the correct answer is (D) Undefined\text{Undefined}.

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