2. two, four
-5
decrease
4( 1)Y=4X
8. Let the resolution function be y=kx.
From the meaning of the question {2k=-3a.
ak=-6
∴a quadratic = 4;
So a = 2
Because the straight line passes through the fourth quadrant, the point (2, -3a) is in the fourth quadrant.
so-3a < 0; a>0
So a=2 gives k=-3.
So the resolution function is y=-3x.
I don't know if the textbook is different from yours! )