Question

11/22
x\ty
0\t20
5\t16
10\t12
15\t8
is the function linear or nonlinear?
linear
nonlinear

Explanation:

Step1: Check x-value differences

Each x increases by 5:
$5-0=5$, $10-5=5$, $15-10=5$

Step2: Check y-value differences

Each y decreases by 4:
$16-20=-4$, $12-16=-4$, $8-12=-4$

Step3: Verify constant rate of change

The ratio of y-change to x-change is constant:
$\frac{-4}{5} = -0.8$ for all pairs

Answer:

Linear