Line QR goes through points Q(0, 1) and R(2, 7). Which equation represents line QR? y – 1 = 6x y – 1 = 3x y – 7 = 2x – 6 y – 7 = x – 2
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To determine an equation of the line given two points: (y-y1) = m(x-x1), where m is the slope m = (y1-y2)/(x1-x2) = (7-1)/(2-0) = 6/2 = 3 substituting m and the point Q yields: (y-1) = 3x Hope this helps
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