Q. What is the slope of the line through (−7,−2) and (−6,7)?Choose 1 answer:(A) 91(B) 9(C) −91(D) −9
Identify Slope Formula: To find the slope of the line through two points, we use the formula for slope m, which is the change in y divided by the change in x, or m=x2−x1y2−y1, where (x1,y1) and (x2,y2) are the coordinates of the two points.
Plug in Coordinates: Let's plug in the coordinates of the two points into the slope formula. For the points (−7,−2) and (−6,7), we have x1=−7, y1=−2, x2=−6, and y2=7.
Calculate Change in y: Now we calculate the change in y, which is y2−y1=7−(−2)=7+2=9.
Calculate Change in x: Next, we calculate the change in x, which is x2−x1=−6−(−7)=−6+7=1.
Find Slope: We can now find the slope by dividing the change in y by the change in x: m=x2−x1y2−y1=19=9.
Final Result: The slope of the line through the points (−7,−2) and (−6,7) is 9, which corresponds to choice (B).