<span>The answer is y = x + 1</span>

**Answer:**

-1

**Step-by-step explanation:**

For a line joining two points (x1, y1) and (x2, y2), it's slope is given as:

Here, the two points are (-1, 6) and (2, 3) in place of (x1, y1) and (x2, y2).

Solving for slope:

Hence, the slope of the line joining the given points is **<u>-1.</u>**

**Step-by-step explanation:**

No, a similar shape have proportional side length.

the triangles side length aren't proportional.