Q. Find the slope-intercept form for the line passing through (71,98) and (81,87).
Find Slope: Find the slopem of the line using the slope formula m=x2−x1y2−y1. We have two points (x1,y1)=(71,98) and (x2,y2)=(81,87). So, m=(81)−(71)(87)−(98).
Calculate Slope: Calculate the slope m.m=(81)−(71)(87)−(98)m=(567)−(568)(7263)−(7264)m=−561−721m=721×156m=7256m=97
Find Y-Intercept: Use one of the points to find the y-interceptb using the point-slope formy−y1=m(x−x1). Let's use the point (71,98). 98=97(71)+b
Solve for b: Solve for b.98=(97)(71)+b98=91+bb=98−91b=97
Write Equation: Write the equation in slope-intercept form y=mx+b. Using the slope m=97 and y-intercept b=97, the equation is: y=(97)x+97
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