For triangle xyw, the slope of wx is , the slope of xy is 0.56, and the slope of yw is . which statement verifies that triangle wxy is a right triangle?

If lines through XY and YW form a 90° angle, so that Y is a right angle, 

then the product of the slopes of the lines through XY and YW must be -1

let the slopes through X,Y and Y,W be  and   respectively 

so 









Right