Q. What is the slope of the line through (−1,8) and (3,−4)?
Identify Coordinates: Identify the coordinates of the two points.The first point is (−1,8), which means x1=−1 and y1=8.The second point is (3,−4), which means x2=3 and y2=−4.
Recall Slope Formula: Recall the formula for the slope m of a line through two points (x1,y1) and (x2,y2). The formula is m=x2−x1y2−y1.
Substitute Coordinates: Substitute the coordinates of the two points into the slope formula. m=3−(−1)−4−8
Perform Subtraction: Perform the subtraction in the numerator and the denominator.m=(−4−8)/(3+1)m=(−12)/(4)
Simplify Fraction: Simplify the fraction to find the slope.m=−412m=−3
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