Graphs of Quadratics


1.  Which statement best describes the graph f(x) = x2 -  7?

a].  It resembles the graph of x2, but shifted 7 units down.

b].  It resembles the graph of x2, but shifted 7 units up.

c].  It resembles the graph of x2, but shifted 7 units left.


2.     Which statement best describes the graph f(x) = (x -  7)2?

a].   It resembles the graph of x2, but shifted 7 units down.

b].  It resembles the graph of x2, but shifted 7 units right.

c].   It resembles the graph of x2, but shifted 7 units left.



3.    Which statement best describes the graph f(x) = (x +  5)2.

a].   It resembles the graph of x2, but shifted 5 units up.

b].   It resembles the graph of x2, but shifted 5 units right.

c].   It resembles the graph of x2, but shifted 5 units left.



4.  Which statement best describes the graph f(x) = 5x2

a]. It resembles the graph of x2, but is thicker at the base.

b]. It resembles the graph of x2, but is thinner at the base.

c]. It resembles the graph of x2, but shifted 5 units up.



5. A baseball is tossed upward from the ground.  Its height in feet above ground after t seconds is given by the equation h(t) = -16t2 + 50t.   At what time does the ball reach its maximum height? 

a].  A time of 39.0625 seconds.

b]. A time of 1.5625 seconds

c].  A height of 39.0625 seconds.





Copyright © 2005 Donna Tupper.