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...
Interpreting Graphs ï· A relationship between two quantities is proportional if the ratio between the quantities is always the same unit rate. Proportional relationships can be represented by the equation y = kx, where k represents a constant. The graph of any proportional relationship will be a straight line through the origin. Ramonâs raced Angel and Carlos in a 50 -meter dash 50-meter Dash A. Ramonâs results are shown on the graph. 1.