Question

04:posttest
hs: algebra 2b m (sequential) / 4:rational equations

x	20	25	40
y	120	150	240

1. which type of variation is modeled in the table?

○ combined
○ inverse
○ direct
○ joint

Explanation:

Direct variation means \( y = kx \) (constant ratio \( \frac{y}{x} \)). For the table: \( \frac{120}{20}=6 \), \( \frac{150}{25}=6 \), \( \frac{240}{40}=6 \). The ratio \( k=6 \) is constant, so it's direct variation.

Answer:

direct