Slope between (1,2) and (3,6).

**The reasoning** The slope measures how steep a line is — how much it rises for every step you take horizontally. The formula is: **slope = (change in y) ÷ (change in x)** For points (1,2) and (3,6): - Change in y = 6 − 2 = 4 - Change in x = 3 − 1 = 2 - Slope = 4 ÷ 2 = **2** This means for every 1 unit you move right, the line rises 2 units up. **Why the wrong options tempt you** **A) 1** — You might subtract wrong: maybe 3−1 = 2, then forget to divide properly. **C) 3** — Common trap! You used only the x-values (3−1) without finding the y-change correctly. **D) 4** — You calculated the change in y (which is 4) but forgot to divide by the change in x. **Quick takeaway** Slope is **rise over run** — always divide the *vertical* change by the *horizontal* change, and subtract coordinates in the same order: (y₂−y₁)/(x₂−x₁).