A line that includes the points (–9,p) and (4,–10) has a slope of –1. What is the value of p?
Given the points (–9,p) and (4,–10) and the slope of -1, we can use the slope formula to find the value of p:
slope = (y2 - y1) / (x2 - x1)
-1 = (-10 - p) / (4 - (-9))
-1 = (-10 - p) / (4 + 9)
-1 = (-10 - p) / 13
-13 = -10 - p
-3 = -p
p = 3
Therefore, the value of p is 3.