Which of the following is the equation of a direct variation that has a constant of variation equal to -1/2? y = x -1/2 -1/2y = x y = -2x y = -1/2x

On a piece of paper graph f(x)=5•(0.4)^x

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Issof claims that the scale factor is 1/2. which statement about his claim is correct