Is (1,3) (1,2) (2,-4) (3,2) a function?

Which statement holds true for absolute value functions? •the absolute value determines the direction in which theb.the coefficient determines the line along which the graph,the distance between the left and the right arm is based od.the vertex coordinates and the absolute value determine 111

How to solve a simultaneous equation involved with fractions?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')