\(x -4y = 0\)
Parallel and Perpendicular Lines
Find the equation of lines perpendicular to given lines
Write the slope-intercept equation of each line that passes through the given point and is perpendicular to given line.
Prove the slope criteria for parallel and perpendicular lines and use them to solve geometric problems (e.g., find the equation of a line parallel or perpendicular to a given line that passes through a given point).