Q. What is the slope of the line through (6,9) and (7,1)? Choose 1 answer: (A) −81 (B) −8 (C) 8 (D) 81
Identify the slope formula: Identify the slope formula.The slope of a line through two points (x1,y1) and (x2,y2) is given by the formula:Slope = x2−x1y2−y1
Substitute the given points: Substitute the given points into the slope formula.We have the points (6,9) and (7,1), so x1=6, y1=9, x2=7, and y2=1.Slope = 7−61−9
Calculate the change in y: Calculate the change in y y2−y1.Change in y = 1−9=−8
Calculate the change in x: Calculate the change in x x2−x1.Change in x = 7−6=1
Calculate the slope: Calculate the slope using the changes in y and x.Slope = 1−8=−8