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5.6.8 - Quick Check: Formalizing Relations and Functions

What is the domain of the function below?
{(0, 2), (3, 1), (5, 2), (8, 4)}?

{1, 2, 4}
{0, 3, 5, 8} ✅
{0, 1, 2, 3, 4, 5, 8}
{(0, 2), (3, 1), (5, 2), (8, 4)}

Is the following relation a function? {(0.3, 0.6), (0.4, 0.8), (0.3, 0.7), (0.5, 0.5)}

yes
no ✅
cannot be determined

Use the vertical line test to determine whether the relation graphed below is a function.

yes ✅
no
cannot be determined

Sound travels about 343 meters per second. The function d(t) = 343t gives the distance d(t) in meters that sound travels in t seconds. How far does sound travel in 8 seconds?

343 meters
686 meters
2,744 meters ✅
3,430 meters

What is the value of the range of the function f(x) = x² + 2 for the domain value 1/4?

y = 2
y = 2 1/4
y = 2 1/8
y = 2 1/16 ✅

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  1. he got it right thank you :D 100%

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