Find the slope of the line going through the pair of points. (1,-5);(1,-4) 1 0 -1 Undefined

To find the slope of a line passing through two points, we use the formula for the slope : Given the points \((1, -5)\) and \((1, -4)\), we can assign:- , - , Substituting these values into the slope formula gives: Since division by zero is undefined, the slope of the line is undefined. Therefore, the correct answer is "Undefined".