CPM Homework Help : CC3 Problem 4-67

Use what you know about $m$ and $b$ to graph each equation below without making a table. Show a growth triangle on each graph and label the $x$ - and $y$ -intercepts.

$y=3-2x$
Step 1 (a):
Identify $m$ and $b$ .
Step 2 (a):
$m=-2,\ b=3$
Step 3 (a):
Graph $b$ , the $y$ -intercept.
Step 4 (a):
Use $m$ to draw the rest of the line.
Intercepts:
$x$ -intercept $=(1.5,0)$
$y$ -intercept $=(0,3)$

$y=2x$
Hint (b):
This is equivalent to $y=2x+0$ .
Follow the steps in part (a).
Answer (b):
$x$ -intercept $=(0,0)\ y$ -intercept $=(0,0)$

$y=3$
Hint (c):
This is equivalent to $y=0x+3$ .
Follow the steps in part (a).

$y=-\frac{1}{2}x+3$
Hint (d):
Follow the steps in part (a).