CPM Homework Help : INT1 Problem A-32

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A-32.

Read the Math Notes box in this lesson. Evaluate the expressions below for the given values of $x$ and $y$ .

Hint:

Rewrite the expression with the number in place of the variable and simplify if possible.

$\frac{6}{x}+9\text{ if }x=3$
Hint (a):
Answer (a):
$11$

$−x^{2} + y \text{ if } x = 2 \text{ and } y = 1$
Hint (b):
$−(2)² + 1$

$−2xy \text{ if }x = 5 \text{ and } y = −3$
More Help (c):
$−2\left(5\right)\left(−3\right) = −10\left(−3\right)$
Answer (c):
$30$

$2x^{2} − y \text{ if }x = −3 \text{ and } y = 8$
Hint (d):
$2\left(−3\right)² − \left(8\right)$

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