Answer:
y = -4/3
Step-by-step explanation:
A direct variation equation has the form
y = kx
We need to find the value of k for this situation.
For that, we use the given values of x and y and solve for k.
When x = -18, y = 15.
15 = k × -18
k = 15/(-18)
k = -5/6
Now that we know the value of k for this specific situation, we write the equation of direct variation for our case.
y = -5/6 x
Finally, we find y when x = 1.6 using our equation.
y = -5/6 x
y = -5/6 × 1.6
y = -8/6
y = -4/3
