It is based on the slope. Use the slope formula. How to enter.
Slope Formula The slope of a straight line describes the lines angle of steepness from the horizontal whether it rises or falls.
Using the Slope Formula Definition of Slope. Identify the values ofx 1x_1 x1 x start subscript 1 end subscriptx 2x_2 x2 x start subscript 2. The slope of a line containing two points x1 y1 and x2 y2 is given by the. The slope of a line is also called its gradient or rate of change.