CPM Homework Help : CC3 Problem 3-85

Examine the graph at right. A 4 quadrant coordinate plane with the following points: (negative 1, comma negative 3), (0, comma negative 1), (1, comma 1), (2, comma 3), and (3, comma 5).

Use the graph to complete the table:
IN (x)
OUT (y)
More Help (a):
IN ( $x$ )
blank
blank
$\color{blue}{1}$
blank
$\color{blue}{3}$
OUT ( $y$ )
blank
blank
$\color{blue}{1}$
blank
$\color{blue}{5}$
Hint (a):
The missing point between the 3rd and 5th points is halfway between the two points.
Use the graph to find the rule:
$y=$ ___________
Hint (b):
The graph is a line, so use what you know about rules in tables.

IN ( $x$ )	blank	blank	$\color{blue}{1}$	blank	$\color{blue}{3}$
OUT ( $y$ )	blank	blank	$\color{blue}{1}$	blank	$\color{blue}{5}$

IN (x)
OUT (y)