state the verticle shift and the equation of the midline for y=4cosθ-1?

Question

step by step

Answer 1

Start with cos(θ), Multiplying this by 4 stretches the graph in the direction of the y-axis. Every point will be 4 times farther from the x-axis. This doesn't cause any vertical shift in the equation or the midline. Then subtract 1. This moves the graph down one. So the vertical shift is negative one, The midline started at 0. This is shifted down one unit as well. So the new midline is at -1.