Which coordinate pair represents the reflection of $(-4,6)$ across the $x$-axis?
(A) $(4,-6)$
(B) $(-4,6)$
(C) $(-4,-6)$
(D) $(4,6)$
Answer (1)
Well, the time is 120 seconds, that is 2 minutes each 60 seconds. You multiply each speed with 120 and you get the final results.
