QUESTION IMAGE
Question
which of the following tables represents a linear relationship that is also proportional? \
\
| x | -3 | 0 | 3 | \ |
| y | 0 | 2 | 4 | \ |
\
| x | -4 | -2 | 0 | \ |
| y | -2 | 0 | 2 | \ |
\
| x | -4 | 0 | 4 | \ |
| y | 1 | 0 | -1 | \ |
\
| x | -1 | 0 | 1 | \ |
| y | -5 | -3 | -1 |
Step1: Recall proportional linear rules
A proportional linear relationship follows $y=kx$ (passes through origin, constant $\frac{y}{x}$).
Step2: Check Table 1
$\frac{0}{-3}=0$, $\frac{2}{0}$ undefined. Not proportional.
Step3: Check Table 2
$\frac{-2}{-4}=\frac{1}{2}$, $\frac{0}{-2}=0$, $\frac{2}{0}$ undefined. Not proportional.
Step4: Check Table 3
$\frac{1}{-4}=-\frac{1}{4}$, $\frac{0}{0}$ undefined, $\frac{-1}{4}=-\frac{1}{4}$. Fails origin check.
Step5: Recheck Table 3 correction
Wait, $\frac{y}{x}$ for valid pairs: $\frac{1}{-4}=-\frac{1}{4}$, $\frac{-1}{4}=-\frac{1}{4}$. And $(0,0)$ is included, so $y=-\frac{1}{4}x$, which is proportional.
Step6: Verify Table 4
$\frac{-5}{-1}=5$, $\frac{-3}{0}$ undefined, $\frac{-1}{1}=-1$. Ratios not equal. Not proportional.
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The table with $x: -4, 0, 4$ and $y: 1, 0, -1$ (third option)