What is the range of the function $$n(x)=5x^2-20x+12$$ ?

The range of the function is $$n(x) \ge -8$$ .

If a triangle has a base of 30 inches and a height of $$4x-10$$ , what is its area?

Area = 1/2 × 30 × (4x - 10) = 15(4x - 10) = 60x - 150.

What is the vertex form of a quadratic function?

The vertex form is $$y=a(x-h)^2+k$$ , where (h,k) is the vertex.

What does the vertex of a parabola represent?

The vertex represents the maximum or minimum point of the parabola.

How do you find the vertex of the quadratic function $$n(x)=5x^2-20x+12$$ ?

Use the formula $$h = -\frac{b}{2a}$$ to find the x-coordinate of the vertex.

What is the significance of the coefficient 'a' in a quadratic function?

The coefficient 'a' determines the direction of the parabola (upward if a > 0, downward if a

What is the quadratic function that has a vertex at (1, 46) and passes through (3, 10)?

The function is $$y=-9(x-1)^2+46$$ .

What does it mean for a function to be in vertex form?

It means the function is expressed as $$y=a(x-h)^2+k$$ , highlighting its vertex.

Alg 1 STAAR Review Flashcards

Student preview

15 questions

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1.

FLASHCARD QUESTION

Front

Back

The domain is all real numbers.

2.

FLASHCARD QUESTION

Front

Back

The range is all real numbers less than 0.

3.

FLASHCARD QUESTION

Front

Back

The domain is all real numbers.

4.

FLASHCARD QUESTION

Front

Back

5.

FLASHCARD QUESTION

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

6.

FLASHCARD QUESTION

Front

What is the formula for the area of a triangle?

Back

Area = 1/2 × base × height.

7.

FLASHCARD QUESTION

Front

Back

Area = 10(5 + 2x) = 50 + 20x.

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