Sciatica is a medical condition characterized by pain going down the leg from the lower back. This pain may go down the back, outside, or front of the leg. Typically, symptoms are only on one side of the body. Certain causes, however, may result in pain on both sides.
We say Distance is directly proportional to time and thatâs why this represents a direct relation. A Directly Proportional Graph describes the relationship of a graph in words and mathematically. When the two measured physical quantities are plotted to form a straight line, we say they are âproportionalâ to each other.
We can equivalently write  y is proportional to 1/ x , which y = c/x would represent. If a linear function transforms 0, a and b into 0, c and d, and if the product a b c d is not zero, we say a and b are proportional to c and d. An equality of two ratios such as, where no term is zero, is called a proportion. The force acting on a certain object due to gravity is directly proportional to the object's mass; the constant of proportionality between the mass and the force is known as gravitational acceleration.