#8
CONCEPT QUIZ
Concept #14:
Algebra 1
Name: __________________
I can solve a quadratic.
Solve .
a. x2 = 196
b. r2 + 8 = 33
a. x = _______ and ________
b. r = _______ and ________
c. 36v2 = 100 (express as a fraction)
d. 10n2 – 5 = 155
c. v = _______ and ________
d. n = _______ and ________
Concept #15:
I can solve a quadratic by factoring.
Solve each equation by factoring. Use the diamond method.
a. x2 + 13x + 36 = 0
b. p2 – 3p = -2
a. x = _______ and ________
b. p = _______ and ________
Solve each equation by factoring. Use the GCF method.
a. 2x2 + 8x = 0
b. 24m2 – 6m = 0
a. x = _______ and ________
b. m = _______ and _______
Concept #16: I can identify the vertex, of symmetry, and zeroes
given a graph.
Identify the vertex, axis of symmetry roots and if the graph has a minimum or maximum.
Vertex: _____________
Vertex: ______________
Axis of symmetry: _____________
Axis of symmetry: _____________
Zeroes: _______________________
Zeroes: _______________________
(Circle one) Has a minimum / maximum.
(Circle one) Has a minimum / maximum.
Concept #17 : I can create a table and graph given a quadratic
function
Graph the following quadratics by making a table. Identify 5 points including the vertex. Show all work.
a. f(x) = x2 + 2x – 1
b.
x
x f(x)
f(x)
QuickTime™ and a
decompressor
are needed to see this picture.
VERTEX
a=
x
b=
VERTEX
a=
b=
c=
c=
b
2a
x

b
2a

Error!
Concept # 13:
a)
I can factor a trinomial into two binomials.
x2+ 20x + 19
b)
(
)(
)
x2 − 2x –24
(
)(
)