Question

Write an equation of the line passing through the point (4,3) that is perpendicular to the line 4x-7x=9

Answer 1

The equation 4x-7x=9 simplifies into x=-3, which is a horizontal line. A perpendicular line would be vertical, and the equation for vertical lines is y=b, b being a constant. In this case on the point (4,3), y is 3, so the equation of the line is y=3.