Graph ​ h(x)=3cos(2x)−1 ​. Use 3.14 for π . Use the sine tool to graph the function. The first point must be on the midline and the secon

Here's the graph : 

https://www.desmos.com/calculator/bwhu2zaivl

This is  the regular cosine graph with an amplitude of 3,  horizontally compressed by a factor of 2  and shifted down one unit