FIND VERTEX AND AXIS OF SYMMTERY OF PARABOLA WORKSHEET

Answer Key

1)  Vertex (h, k) = (1, 3)

Axis of symmetry at x = 1

y- intercept is (0, 4)

2)  Vertex (h, k) = (-2, 1)

Axis of symmetry x = -2

y- intercept is (0, 9)

3)  Vertex (h, k) = (1, -3)

Axis of symmetry is at x = 1

y- intercept is (0, -5)

4)  Vertex (h, k) = (3, 2)

Axis of symmetry is at x = 3

y- intercept is (0, 13/2)

5)  Vertex is (h, k) = (1, 4)

Axis of symmetry is at x = 1

y- intercept (0, 3 2/3)

6)  Vertex is (h, k) = (-2, -3)

Axis of symmetry is at x = -2

y- intercept (0, -3 2/5)

Determine the equation of quadratic function from graph. Give the function in vertex form.

Problem 1 :

Solution

Problem 2 :

Solution

Problem 3 :

Solution

Problem 4 :

Solution

Answer Key

1)  So, the equation of the parabola is y = x² + 1.

2)  So, the equation of the parabola is y = (x + 3)² - 1.

3) So, the equation of the parabola is y = x² - 2

4)  So, the equation of the parabola is y = 1(x - 1)² + 1.