CPM Homework Help : CC3 Problem 9-143

Complete the table.

$x$	$-5$	$1$	$3$	$0$	$8$	$-2$	$-1$
$y$	$7$			$2$		$4$

Find the rule.
Hint (a):
Do you see any patterns?
Notice the difference in the $y$ -value from $x = 0$ to $x=-2$ .
More Help (a):
Also notice that as the $x$ -value decreases, the $y$ -value increases, and vice versa.
Answer (a):
$y=-x+2$
What is the slope?
Hint (b):
$\text{Slope} = \frac{\text{rise}}{\text{run}}$
Answer (b):
$-1$

Complete the table in the eTool below.
Click the link at right for the full version of the eTool: 9-143 HW eTool