Identify the transformations needed to graph the cosine function y = - 0.5cos (x) - 3 from the parent cosine function. Check all that apply.

vertical compression by a factor of 0.5

reflection across the y-axis

vertical translation 3 units down

vertical stretch by a factor of 0.5

reflection across the x-axis

vertical translation 3 units up

vertical translation 0.5 units down

Vertical translation 3 units down, vertical compression by a factor of 0.5, and r eflection across the x-axis. This is because since the number - 3 is outside of the parenthesis, it is a vertical translation and is since it is negative it is 3 down. If the number multiplied by the function is less than 1 it is a compression and if it is greater than 1 it is a stretch. And the negative represents the reflection across the x axis.

1,3 and 5 on ed. genuity