The quantities x and y are proportional. x y
2 22
7 77
9 99
Find the constant of proportionality (r) in the equation y=rx.

Compare the subtraction problems 6/8 - 5/8 = 1/8 and 6/9 - 7/9 = 1/9 why is the answer to the first problem positive and the answer to the second problem negative

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Write the slope-intercept form of the line that passes through the point (1, 0) and is parallel to x - y = 7. t