SOLUTION: Architecture. Architects often use the equation x + y = 18 to determine the height y, in inches, of the riser of a step when the tread is x inches wide. Express the slope of stairs

Algebra ->  Linear-equations -> SOLUTION: Architecture. Architects often use the equation x + y = 18 to determine the height y, in inches, of the riser of a step when the tread is x inches wide. Express the slope of stairs      Log On


   

Question 447164: Architecture. Architects often use the equation x + y = 18 to determine the height y, in inches, of the riser of a step when the tread is x inches wide. Express the slope of stairs designed with this equation without using the variable y.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
If the height is the dependent variable, then

y = 18-x = -x+18

Slope is -1.