slopes of perpendicular lines are negative reciprocals of each other
in this case ... m = -1 / -5 = 1/5
y = 1/5 x + b ... 2 = (10 / 5) + b ... 0 = b
What is the slope and the y-intercept of the line that passes through (10, 2) and is perpendicular to y=−5x+3 ?
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