Answer:
expression: y = 3.6x
for x = 11, then y = 39.6
Step-by-step explanation:
Direct variation uses the following equation:
y = kx
For each case, there will be an actual number instead of k.
We need to find which value of k our problem uses. We can use teh given x and y values, and solve for k.
y = kx, use x = 5 and y = 18, and solve for k
18 = k * 5
k = 18/5 = 3.6
In our case, k = 3.6, so the specific equation for direct varuiation for this problem is
y = 3.6x
Now we can find y when x = 11.
y = 3.6x
y = 3.6(11)
y = 39.6
