Practice Line in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A perfectly straight path extending infinitely in both directions through two distinct points, with no thickness.
A perfectly straight edge that goes on forever in both directions.
Example 1
easyWrite the equation of a line with slope m = 2 and y-intercept b = -3.
Example 2
mediumFind the slope of the line passing through points (1, 3) and (4, 9).
Example 3
easyWhat is the slope of a horizontal line? What is the slope of a vertical line?
Example 4
hardLine \ell_1: y = 3x + 1. Line \ell_2: y = -\frac{1}{3}x + 4. Are these lines perpendicular? Justify your answer.