Question

x y 5 4 6 4.8 11 8.8 not direct variation direct variation equation:

Explanation:

Step1: Check direct variation condition

Direct variation follows $y = kx$, so $k = \frac{y}{x}$.
For $(5,4)$: $k=\frac{4}{5}=0.8$
For $(6,4.8)$: $k=\frac{4.8}{6}=0.8$
For $(11,8.8)$: $k=\frac{8.8}{11}=0.8$

Step2: Write direct variation equation

Substitute $k=0.8$ into $y=kx$.
$y = 0.8x$

Answer:

Direct variation
Equation: $y = 0.8x$