BUSI 1915U Lecture Notes - Lecture 5: Linear Equation, Mutual Fund, Solution Set
Document Summary
Number of pizza toppings & the cost of the pizza. The relationship between pairs of variables is depicted in a two-dimensional coordinate system. If x and y are real numbers, then (x, y) is called an ordered pair of real numbers. The numbers x and y are the coordinates of the ordered pair, with x being the first coordinate or abscissa, and y being the second coordinate or ordinate. To picture ordered pairs of real numbers we use the rectangular coordinate system or. The cartesian coordinate system consists of two number lines drawn perpendicular to one another, intersecting at zero on each number line. The point of intersection of the number lines is called the origin. The horizontal number line is the x-axis and its positive numbers are to the right of the origin. The vertical number line is the y-axis and its positive numbers are above the origin.
