The sketch below shows part of the graph of y = ab*, where a and b are constants.
YA
(1.5, k)
(1, 18)
(0,8)
X
Work out the values of a, b and k.

in this question wrong options the correct value of k is 5

y=−9/2x+10

step-by-step explanation:

let's solve for y.

0−9x−2y=−20

step 1: add 9x to both sides.

−9x−2y+9x=−20+9x

−2y=9x−20

step 2: divide both sides by -2.

−2y

−2

=

9x−20

−2

y=

−9

2

x+10