application or intradermal injection of a substance to the skin to test the body's reaction to it. Such a test detects an animal's sensitivity to such allergens as dust and pollen, or to preparations of microorganisms believed to be the cause of a disorder.
A direct relationship graph is a graph where one variable either increases or decreases along with the other. The general equation for a direct relationship graph is y = mx + b, where y denotes the...
Proportional quantities can be described by the equation y = k x, where k is a constant ratio. Step 2) we can tell that the relationship is directly proportional by looking at the graph. The graph is a straight line and it passes through the origin. So, the relationship is directly proportional. First, create a chart. Use points from the graph, such as (2, 20), (4, 40), (6, 60), (8, 80) and (10, 100)..