Given that $y=1-3x$, copy and complete the following table. $x$$-3$$-2$$-1$$1$$2$

Question

Given that $y=1-3x$, copy and complete the following table. $x$$-3$$-2$$-1$$1$$2$$3$ $y$$10$$-2$ Using a scale of $2$ cm to represent $1$ unit on the $x$-axis and $2$ cm to represent $2$ units on the $y$-axis, draw the graph of $y=1-3x$ for values of $x$ from $-3$ to $3$. Using your graph, find the value of $y$ when $x=1.5$, $x$ when $y=1$. Hence, or otherwise, find the gradient of the graph.

Accepted Answer

$y=7$; $y=4$; $y=-5$; $y=-8$ (c)(i) $y=-3.5$ (c)(ii) $x=0$ (d) $-3$

Graphing and Interpreting a Linear Function

Graphing and Interpreting a Linear Function

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