Question

rotate point b 180 counter - clockwise about the origin. enter the new coordinates. b=( )

Explanation:

Step1: Recall rotation rule

The rule for rotating a point $(x,y)$ 180 - degrees counter - clockwise about the origin is $(x,y)\to(-x,-y)$.

Step2: Apply the rule to point B

Given point B with coordinates $(4,2)$. Here $x = 4$ and $y = 2$. Using the rule, the new $x$ - coordinate is $-4$ and the new $y$ - coordinate is $-2$.

Answer:

$(-4,-2)$