(2) For the rule $y=3 x-4$, find the value of $y$ for these $x$-values.
a $x=2$
b $x=-1$

Answer

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Answer

Final Answer: For $x=2$, $y$ is $\boxed{2}$ and for $x=-1$, $y$ is $\boxed{-7}$.

Steps

Step 1 ：We are given a linear equation $y=3x-4$ and we need to find the value of $y$ for $x=2$ and $x=-1$.

Step 2 ：We can substitute these values of $x$ into the equation to find the corresponding $y$ values.

Step 3 ：For $x=2$, substituting into the equation gives $y=3*2-4=2$.

Step 4 ：For $x=-1$, substituting into the equation gives $y=3*(-1)-4=-7$.

Step 5 ：Final Answer: For $x=2$, $y$ is $\boxed{2}$ and for $x=-1$, $y$ is $\boxed{-7}$.