Question

graph the image of u(7, 9) after a rotation 90° counterclockwise around the origin.

Explanation:

Step1: Recall rotation rule

The rule for a 90 - degree counter - clockwise rotation around the origin is $(x,y)\to(-y,x)$.

Step2: Apply the rule

Given the point $U(7,9)$, substituting $x = 7$ and $y = 9$ into the rule, we get $(-9,7)$.

Answer:

The image of point $U(7,9)$ after a 90 - degree counter - clockwise rotation around the origin is $(-9,7)$.