Answer
(97, 73), x = 97
(13, -81), y = -81
(-91, -26) y = -26
(74, 25), x = 74
Step-by-step explanation
if it has an undefined slope, it is a vertical line with the equation x = (x value)
if it has a 0 slope, it is a horizontal line with the equation y = (y value)
undefined slope through (97, 73)
the x value is 97
x = 97
slope of 0 through (13, -81)
the y value is -81
y = -81
slope of 0 through (-91, -26)
the y value is -26
y = -26
undefined slope through (74, 25)
the x value is 74
x = 74
