Q. What is the slope of the line through (1,−1) and (5,−7)? Choose 1 answer: (A) −23 (B) 23 (C) −32 (D) 32
Identify the slope formula: Identify the slope formula.The slope of a line is calculated by the change in y-coordinates divided by the change in x-coordinates between two points on the line.Slope formula: (y2−y1)/(x2−x1)
Substitute the given points: Substitute the given points into the slope formula.We have the points (1,−1) and (5,−7). Let's denote (1,−1) as (x1,y1) and (5,−7) as (x2,y2).Slope: 5−1−7−(−1)
Calculate change in y-coordinates: Calculate the change in y-coordinates.Change in y: −7−(−1) which simplifies to −7+1 which equals −6.
Calculate change in x-coordinates: Calculate the change in x-coordinates.Change in x: 5−1 which equals 4.
Calculate the slope: Calculate the slope using the changes in y and x.Slope: (−6)/4 which simplifies to −3/2 or −(23).