Discrete & Continuous Functions

What is the domain for y = -6x + 9?

• All real numbers

• x > 9

• -6 < x < 9

• Cannot be determined

What is the range for y = x² + 8x + 9?

• all real numbers

• y ≥ -7

• -7 ≤ y ≤ 9

• cannot be determined

Is y = -2x² -12x - 13 a discrete or continuous function?

• discrete

• continuous

What is the range for y = -2x² - 12x - 13?

• y ≥ 5

• cannot be determined

• all real numbers

• y ≤ 5

Jonathan has 175 candy bars to sell for his baseball team. If each candy bar costs $1.50, what is the domain?

• 0 ≤ x ≤ 262.50

• all real numbers

• 0 ≤ x ≤ 175, x ∈ ℤ

• x ≤ 175, x ∈ ℤ

Jonathan has 175 candy bars to sell for his baseball team. If each candy bar costs $1.50, what is the range?

• 0 ≤ y ≤ 262.50

• all real numbers

• 0 ≤ y ≤ 175, y ∈ ℤ

• y ≤ 175, y ∈ ℤ

Samantha has $1,000 to shop at a local department store. Samantha will spend the money on blouses for $38 each. What is the domain?

• 0 ≤ x ≤ 26, x ∈ ℤ

• 0 ≤ x ≤ 26

• 0 ≤ x ≤ 1000

• all real numbers

What is the domain?

• {-6, -4, -2, 3, 5, 6}

• {-5, -2, 2, 3, 5}

• {-6, -5, -4, -2, 2, 3, 5, 6}

• {-5 ≤ x ≤ 5}

What is the range?

• {-6, -4, -2, 3, 5, 6}

• {-5, -2, 2, 3, 5}

• {-6, -5, -4, -2, 2, 3, 5, 6}

• {-6 ≤ y ≤ 6}

In discrete functions, the x-values...

• Can be all numbers
• Can only be whole numbers
• Can only be decimals

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1