SLOPE
SCOUT

y = kx — all proportional relationships pass through the origin (0, 0). The constant of proportionality k is the rate of change.

k = y ÷ x — since the line goes through (0,0), you can use any row: just divide y by x.

Negative k → y decreases as x increases. Works the same way: k = y ÷ x.

From a Table — Pick any 2 rows and apply the formula. Type your answer.

Real-World — A context story with two data points. Choose the unit rate from 4 options.