Question

Point B has coordinate B(1, –1). What is the coordinate of B' under a scale factor of 3?

1,-1
3,-3
-2,2
-6,6

Answer 1

B) 3,-3

Explanation:

Answer 2

The coordinate B' is
`B' = (3, -3)`.

Explanation:

The new coordinate is computed by applying the scale factor with respect to origin:

`B' = \alpha \cdot B`

`B' = 3\cdot (1,-1)`

`B' = (3\cdot 1, 3 \cdot (-1))`

`B' = (3, -3)`