Question

f (x) = (2K + 18)x - 4

Answer 1

F(X) = 2KX +18X -4

2KX= -18X -4
K=(-9X -2)/X
K = -9 -2/X

(2(-9-2/X)X -4 =
(-18 -4/X)X -4=
-18X -4 -4=
-18X = -8
X= -18/8=2,25

K = -9 -2/2,25 = 9,8889