Question

triangle abc was dilated using the rule d_{o,a}. triangle abc is the result of the dilation. what is ob? 1.5 units 3 units 4.5 units 6 units

Explanation:

Step1: Identify dilation scale factor

The rule $D_{O,4}$ means center $O$ and scale factor 4.

Step2: Find $OB$ from the graph

The graph shows $OB = \frac{3}{4}$ units.

Step3: Calculate $OB'$

$OB' = \text{scale factor} \times OB = 4 \times \frac{3}{4} = 3$ units.

Answer:

B. 3 units