#6. Circle all equations in which y is a function of z: y+z=1 1 z+1 |y|+|2|=1 Z= 1 +1 |y|-z=1 yz = 12 #7. Ranger Biff says the fox population is a function of the bunnyrabbit population.. Which quantity is the independent variable, which is usually graphed along the x-axis? #8. True or False? If no vertical line can be found that intersects a graph more than once, then they graph displays a functional relationship. #10. What point will we find on the graph of f if f(-2) = 3? #9. True or False? To be a function, each value of output must be associated with a single value of input.