Graphing Equations in Standard Form

In the standard form for quadratics: y=ax²+bx+c, what number can a never equal?

• 5

• 0

• 1

• 6

Which equation below is a quadratic?

• y=9x+5
• y=3x²-6
• y=5x³+6
• x=3^x

Does the equation open or or down? 
Y = -3x² +7x - 2

• up
• down

Does the following quadratic equation have a maximum or minimum value? How can you tell?
y=x²+2x-3

• Minimum value, because the a value is positive
• Maximum value, because the b value is positive
• Maximum value, because the a value is positive
• Minimum value, because the c value is negative

What is the domain of the function?

• D:{ x > 3}
• D:{x < 3}
• D:{all real numbers}
• D:{ -1 < x < 5}

Find the axis of symmetry for
f(x) = x²- 8x + 15.

• x = -4
• x = 4
• y = 4
• y = -4

Find the vertex of 
f(x) = -x² - 4x + 12.

• (-2, 16)
• (2, 0)
• (2, 4)
• (-2, 4)

What is the vertex?

• (2, 4)
• (3, -1)
• (0, 8)
• (4, 2)

What is the y-intercept of 
f(x)=2x² + 4x + 6

• (6 , 0)
• (-6 , 0)
• (0, -6)
• (0 , 6)

If each mark on the x-axis represents one second, when did the object reach its maximum height?

• 2.5 seconds
• 2 seconds
• 5.5 seconds
• 3 seconds