Determine which of the following equations is not a linear function. O y = -x + 1
O y = |xl - 2
O y = 2x + 3
O y = -7x - 1

The second option is not a linear function.

Step-by-step explanation:

Since it is an absolute value of x, you would not get just one straight line. You would get a triangular shape (just missing one side).

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