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...
DEFINITION of 'Linear Relationship'. Linear relationship is a statistical term used to describe the relationship between a variable and a constant.he slope âmâ is calculated from any two individual points (x_1, y_1) and (x_2, y_2) as. m = (y_2 - y_1) / (x_2 - x_1). while the y-intercept âbâ is simply the value of âyâ when x=0. Mathematically similar to a linear relationship is the concept of a linear function.