Question

What is the image of (-1,9) after a dilation by a scale factor of 2 centered at the origin?

Answer 1

Answer:

$A' = (-2,18)$

Step-by-step explanation:

Given

$A = (-1,9)$

$k = 2$

Required

The image

Let the point be called A, such that the image is A'.

A' is calculated as:

$A' = k * A$

This gives:

$A' = 2 * (-1,9)$

$A' = (-2,18)$