Review of Quadratic Equations

ax²+bx+c=0  is the standard form of a quadratic equation.

• True

• False

The quadratic equation can be used to solve quadratic equations that cannot be factored.

• True

• False

• ±81
• ±9
• ±3
• No real solution

In the quadratic formula, the expression
b²-4ac is called

• discrim

• determinant

• discriminant

• none of these

One solution of the quadratic equation
x²-7x+12=0 is

• x=3

• x=2

• x=-3

• x=-2

What transformation has happened from f(x) = x² to f(x) = x² + 6?

• The new function shifts down 6 units.

• The new function shifts up 6 units.

• The new function is narrower.

• The new function is wider.

What transformation has happened from f(x) = x² to f(x) = x² - 3?

• The new function gets wider.

• The new function gets narrower.

• The new function shifts down 3 units.

• The new function shifts up 3 units.

What transformation has happened from f(x) = x² to f(x) = 3x² + 2 ?

• The new function gets wider.

• The new function shifts up 2 units.

• The new function gets narrower.

• The new function gets narrower and shifts up 2 units.

What transformation has happened from f(x) = x² to f(x) = -3x² ?

• The new function reflects about the y-axis.

• The new function reflects about the x-axis and gets narrower.

• The new function reflects about the x-axis and gets wider.

• The new function gets narrower.

What is the vertex of
f(x) = (x - 1)² + 2?

• (-1, 2)

• (-1, -2)

• (1, 2)

• (1, -2)