Mrs. Jones Final Exam

Front

What is the equation of a parabola that opens upwards and has a vertex at (3, -4)?

Back

Front

How do you evaluate the function f(x) = 2x^2 - 3x + 5 at x = 2?

Back

f(2) = 2(2)^2 - 3(2) + 5 = 7.

Front

What is the formula to find the sum of the interior angles of a polygon?

Back

Front

How many sides does a polygon have if the sum of its interior angles is 1800 degrees?

Back

The polygon has 12 sides.

Front

What is the distance formula between two points (x₁, y₁) and (x₂, y₂)?

Back

Front

What is the solution to the system of equations 2x + 3y = 6 and 4x - y = 5?

Back

The solution is (2, 0).

Front

What is the vertex form of a parabola?

Back

Front

What does the 'a' in the vertex form of a parabola indicate?

Back

The 'a' value indicates the direction and width of the parabola; if 'a' is positive, it opens upwards, and if negative, it opens downwards.

Front

How do you find the x-intercepts of a quadratic function?

Back

Set the function equal to zero and solve for x.

Front

What is the quadratic formula used for?

Back