Answer Happy

Let l and k be perpendicular lines. The slope of a line m is glven by the product of the slopes of L and k. Furthermore, the point [1,−9] lies on m. Give an equation of the line m. Give your answer in the form y=ax+b for suitable numbers a and b. y=∣x+
Recall that l and k are perpendicular, Line l makes an angle of 80 degrees with the x-axis. Compute the angle that line k makes with the x-axis. Compute the angle in rodians and give an answer in the interval [0,2π​] radians