For $-4\le x\le4$, with $x\ne0$, $y=\dfrac4x$. $x$-4-2-1124 $y$-1-441 Complete the ta

Question

For $-4\le x\le4$, with $x\ne0$, $y=\dfrac4x$. $x$-4-2-1124 $y$-1-441 Complete the table.[2] Plot the points and draw the two separate branches on the grid.[3] Explain why the two branches must not be joined through $x=0$.[1]

Accepted Answer

(a) $-2,2$. (b) See branches. (c) $\dfrac40$ is undefined.

Separate branches of a reciprocal curve

Separate branches of a reciprocal curve

Solution:

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