Quadrilateral ABCD is represented by the vertices A(-5,-1), B(-4,3), C(8,0) and D(7,-4). Prove ABCD is a parallelogram.

Which composition of similarity transformations maps polygon abcd to polygon a'b'c'd'? a dilation with a scale factor less than 1 and then a reflection a dilation with a scale factor less than 1 and then a translation a dilation with a scale factor greater than 1 and then a reflection a dilation with a scale factor greater than 1 and then a translation

Find the cosine function that is represented in the graph.

The anwser cause i do not understand just plez