For each equation, determine whether and are directly proportional (that is if the equation shows direct variation). If so, then find the constant of proportionality (the constant of variation).

(a) 1/8 - 5x = y
Proportional or Not proportional
Constant of proportionality: k= ___

(b) y = 4x
Proportional or Not proportional
Constant of proportionality: k= ___

351°f

step-by-step explanation:

what graph

step-by-step explanation:

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584