equation is y = 1.123x -6.443 where y represents the armspan and x represents the height . Now we need to find the height , when armspan = 67.5 inches. SO we need to plug 67.5 for y and solve for x that is
67.5 = 1.123x -6.443
adding 6.443 to both sides
67.5 +6.443 =1.123x
73.943 = 1.123x
Dividing both sides by 1.123
x = 65.84 inches .
So for the given armspan of 67.5 inches, height is 65.84 inches .
