A, C, and E.
you can check them by putting into y=mx+b form. if m is negative then as domain increases range decreases.
When x = 1
5(1) = -y + 6
5 = -y + 6
y = 6 - 5 = 1
When x = 2
5(2) = -y + 6
10 = -y + 6
y = 6 - 10 = -4
When x = 3
5(3) = -y + 6
15 = -y + 6
y = 6 - 15 = -9
the answer for 53. is the gram.