CPM Homework Help : MC2 Problem 6-50

Evaluate the expressions $3x-2$ and $4x + 4$ for the following values of $x$ . When you have found the value for each expression, write a statement using $<$ , $>$ , or $=$ that shows how the two values are related.

Hint:

Substitute the given values for $x$ and decide whether one side is greater than, less than, or equal to the other side.

$x = 0$
Hint (a):
$3 ( 0 ) − 2 = 0 − 2 = −2$
$4 ( 0 ) + 4 = 0 + 4 = 4$
Answer (a):
$−2 < 4$

$x=-6$
Hint (b):
$3 ( −6 ) − 2 = −18 − 2 = −20$
$4 ( −6 ) + 4 = −24 + 4 = −20$
Answer (b):
$−20 = −20$

$x = 5$
Hint (c):
$3 ( 5 ) − 2 = ?$
$4 ( 5 ) + 4 = ?$

$x =-2$
Hint (d):
Refer to parts (a), (b), and (c).