This is the "Problem 4" that the question in top is talking about

Architecture An architect uses software to design the ceiling of a room. 'The architect needs to enter an equation that represents a new beam. The new beam will be perpendicular to the existing beam, which is represented by the red line. The new beam will pass through the corner represented by the blue point. What is an equation that represents the new beam? Step 1 Use the slope formula to find the slope of the red line that represents the existing beam. = 4 6 Points (3, 6) and (6, 4) 6 3 are on the red line. Ol2 4|6 8 10\\ 12 = 2 simplify The slope of the line that represents the existing beam is + Step 2 Find the opposite reciprocal of the slope from Step 1. The opposite reciprocal of 4 is =. Step3 Use point-slope form to write an equation. The slope of the line that represents the new beam is : . It will pass through (12, 10). An equation that cemeatith the new beam is y 10 = A(x 12) or, in slope-intercept form, y = dy 8