Quadratics Part 1 - TEST

What is the arrow pointing at? How can you use this value?

• The arrow is pointing at the y-intercept. The x-value is the axis of symmetry and the y-value of this point is equivalent to the maximum/minimum 
• The arrow is pointing at the vertex. The x value of this point is equivalent to the maximum/minimum and the y-value is the axis of symmetry
• The arrow is pointing at the solution. The y value of this point is equivalent to the maximum and the x value is equivalent to the minimum
• The arrow is pointing at the vertex. The x-value is the axis of symmetry and the y-value is equivalent to the minimum/maximum

The graph of which of the following has a vertex at the point (0,8)?

• y=x²+8

• y=x²-8

• y=(x+8)²

• y=(x-8)²

Identify the solution(s) to this equation:

y= (x-5)(x+5)

• (-5,0)(5,0)

• (5,0)(-5,0)

• (5,0)(0,5)

• (0,5)(0,-5)

What is another word for x-intercepts?

• zeros

• roots

• solutions

• they are all correct

What does the "8" in the following equation identify?

y=-3x²-7x+8

• x-intercept

• axis of symmetry

• y-intercept

• vertex

In the equation y=4x²-8x+9, what is the 4 and what does it tell you about the graph?

• it is the axis of symmetry and it tells you the midway point between the zeros

• it is the lead coefficient and it tells you the graph opens up and will have a minimum vertex

• it is the x-coordinate of the vertex and the value of the axis of symmetry

• it is the y-coordinate of the axis symmetry and tells you the height of the vertex

If the solutions of a quadratic equation are 8 and -4, what is the axis of symmetry?

• x = 2

• y = 4

• x = 8

• x = 6

In a table of values, how do you identify the y-intercept?

• find the point whose x-coordinate is zero

• find the highest y-value of all the points in the table

• find the y-value that falls between two other equal y-values

• find the x-value that has a y-coordinate of zero

In a table of values, how do you identify the solution(s) of a quadratic equation?

• Find the axis of symmetry x-coordinate

• Find the vertex y-coordinate

• Find the point(s) that have an x-coordinate of zero

• Find the point(s) that have a y-coordinate of zero

Does this graph have a maximum or minimum value?

• maximum
• minimum
• neither
• both

Tags

CCSS.HSF-IF.C.7A