5.1 Practice Operations on Functions

If f(x) = 2x + 3 and g(x) = x^2 - 1, what is (f + g)(x)?

• 2x + 2

Tags

TEKS.MATH.9-12.II.B.1

TEKS.MATH.9-12.VII.C.1

Tags

TEKS.MATH.9-12.II.B.1

(f · g)(x) = ​ (a)   ​ , where f(x) = 5x + 1 and g(x) = x - 3.

• 5x^2 + 1x - 15
• 5x^2 + 3x - 1
• 5x^2-14x-3
• 5x^2+1x-15

Tags

TEKS.MATH.9-12.II.B.1

TEKS.MATH.9-12.VII.C.1

(f ÷ g)(x) = (a)   , where f(x) = 6x - 2 and g(x) = 4x + 5.

Tags

TEKS.MATH.9-12.II.B.1

TEKS.MATH.9-12.VII.C.1

If f(x) = x^2 + 1 and g(x) = x + 1, what is (f + g)(x)?

• x^2 + 2x + 1

• x^2 + 1

• x^2 + x + 1

• x^2 + x + 2

Tags

TEKS.MATH.9-12.II.B.1

TEKS.MATH.9-12.VII.C.1

If f(x) = 2x - 1 and g(x) = 3x + 4, what is (f - g)(x)?

• -x + 5

• -x - 5

• 5x + 3

• x - 5

Tags

TEKS.MATH.9-12.II.B.1

If f(x) = 4x and g(x) = x + 2, what is (f · g)(x)?

• 4x^2 + 8x

• 4x^2 + 8

• 4x^2 + 6x

• 4x^2 + 6

Tags

TEKS.MATH.9-12.II.B.1

TEKS.MATH.9-12.VII.C.1

(f ÷ g)(x) is equal to (a)   if f(x) = x^2 + 4x + 4 and g(x) = x + 2.

• A) x + 2
• B) x - 2
• C) x^2 + 2
• D) x^2 + 4x + 4

Tags

TEKS.MATH.9-12.II.B.1

TEKS.MATH.9-12.VII.B.1

If f(x) = 3x + 2 and g(x) = x - 1, what is (f + g)(x)?

• 4x + 1

• 3x + 2x - 1

• 3x + 3

• 2x + 1

Tags

TEKS.MATH.9-12.II.B.1

TEKS.MATH.9-12.VII.C.1

Tags

TEKS.MATH.9-12.II.B.1