Linear relationships can be expressed either in a graphical format or as a mathematical equation of the form y = mx + b. Linear functions are widely used in economics, physics, finance, and data ...

1. Find 2 points which satisfy the equation 2. Plot them 3. Connect the points with a straight line Example: y = 25 + 5x let x = 1 then y = 25 + 5 (1) = 30 let x = 3 then y = 25 + 5 (3) = 40 A simple ...

The line represents the function that best describes the relationship between X and Y (for example, for every time X increases by 3, Y increases by 2). The goal is to find an optimal “regression line” ...

If two linear functions have the same slope they are parallel. Slopes of linear functions The slope of a linear function is the same no matter where on the line it is measured. (This is not true for ...