Determinant of the slope y = 3x-4 y = 2 (x + 1) y = 0.5x + 1.

1) The equation of a straight line with a slope is as follows: y = kx + b, where k is the desired slope, b is some real number. Any straight line that is not parallel to the Oy axis can be specified by the equation of a straight line with a slope (for a straight line parallel to the ordinate, the slope is not defined).

2) y = 3x – 4. The slope is 3, k = 3.
y = 2 (x + 1); y = 2x + 2. The slope is 2, k = 2.
y = 0.5x + 1. The slope is 0.5, k = 0.5.