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 .
For example, f(x)= x + 6. However there are many forms to express linear functions. This assignment will focus on the slope - intercept form; f(x) = mx + b. Therefore, the above function has slope 1 and y-intercept 6. The graph of a linear function is always a straight line. Adding linear Functions.