How the straight line is different than the data points
Why it different ?

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Aiden drives to school and back each day. the school is 16 miles from his home. he averages 40 miles per hour on his way to school. if his trip takes 1 hour, at approximately what speed does aiden drive home?

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

Find the slope and the y-intercept if there's one and the equation of the line given these two points( 3, 2) and( 3, -4)