The vertices of a rhombus are located at (0,0), (0,b), (-a,0) and (0,-b), where a, b>0. what is the midpoint of the side that is in quadrant

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

Find x & pleassse me !

Graph y = -|x| + 2. click on the graph until the correct one appears.