Question

The diameter of a circle drawn on a coordinate grid has one of its end points at (-3, 2) and the other end point at (6, -4). Leena performed the steps shown to find the length of the diameter.


Step 1. x1 = -3, y1 = 2, x2 = 6, y2 = -4
Step 2. Distance =
Step 3. Distance =
Step 4. Distance =
Step 5. Distance is approximately 6.71

In which step did Leena first make an error?

Answer 1

Step 1, because she substituted the incorrect values for x2 and y1.

Step 3, because she added the x coordinates instead of subtracting them.

Step 2, because she used the incorrect formula to find the length.

Step 5, because she found the square root of 45 instead of the square root of 9.