The area of a rectangle varies jointly as the length and the width, and whose A = 72 sq. cm when l = 3 cm and w = 2 cm. What is the constant of variation (k)? a. 12
b. 10
c. 8
d. 14

a

Step-by-step explanation:

Given A varies jointly as l and w then the equation relating them is

A = klw ← k is the constant of variation

To find k use the condition A = 72 when l = 3 and w = 2 , then

72 = k × 3 × 2 = 6k ( divide both sides by 6 )

12 = k

we have the parent function given by,

1. the function is translated 5 units to the left.

so, we get,   becomes

2. the function is translated 5 units to the right.

so, we get,   becomes

3. the function is translated 5 units upwards.

so, we get,   becomes

4. the function is translated 5 units downwards.

so, we get,   becomes

5. the function is reflected across x-axis.

so, we get,   becomes

6. the function is reflected across y-axis.

so, we get,   becomes .

step-by-step explanation:

mark brainliest.