2. Then add heat. After 24 hours, use heat to dilate the blood vessels and improve circulation in the area. Warm compresses will help speed up the bodys natural mechanisms for removing the blood in the bruise, says Randy Wexler, M.D.
where k is the constant of variation. Since k is constant (the same for every point), we can find k when given any point by dividing the y-coordinate by the x-coordinate. For example, if y varies directly as x , and y = 6 when x = 2 , the constant of variation is k = = 3 . Thus, the equation describing this direct variation is y = 3x .
Reproduction permitted for classrooms 2B Inverse Variation 3 Reflecting 1. Fill in the blank with a word that will make these statements true. a) A direct variation is a relation in which the ratio of two variables is a. b) An inverse variation is a relation in which the of two variables is constant. 2.