Final answer:
The equation for line OR is y = 3x - 2.
Step-by-step explanation:
The equation that represents line OR can be found by using the coordinates of points Q(0,1) and R(2,7). The formula for finding the equation of a line using two points is: y - y1 = m(x - x1), where (x1, y1) are the coordinates of one point on the line and m is the slope of the line. The slope can be calculated using the formula: m = (y2 - y1) / (x2 - x1). Plugging in the values, the equation for line OR is: y - 1 = 3(x - 0), which simplifies to y = 3x - 2.