If given the equation y = 3(x + 5)2 - 4, what is the vertex of the parabola?
a)
(5, -4)
b)
(-5, -4)
c)
(-15, -4)
d)
(15, -4)
2.
What is the vertex?
a)
(4,-4)
b)
(2,0)
c)
(0,2)
d)
(6,0)
3.
What is the VERTEX of the parabola?
y=−3(x−5)2+4
a)
(5, 4)
b)
(-5, 4)
c)
(-5, -3)
d)
(-3, -5)
4.
Identify the vertex and whether the graph opens up or down.
a)
(5, 2); opens up
b)
(5, 2); opens down
c)
(-5, 2); opens up
d)
(-5, 2); opens down
5.
Which correctly describes the parabola: y=−21(x+3)2+4
a)
Opens left
b)
Opens right
c)
Opens up
d)
Opens down
6.
What is the vertex of the following equation y = 2(x − 3)² + 4
a)
(3, 4)
b)
( −3, 4)
c)
(2, 4)
d)
(3, 2)
7.
Write the equation of a parabola with a vertex at (3, -6) that opens up and it is stretched vertically by a factor of 4.
a)
y = 4(x - 3)2 + 6
b)
y = 4(x - 3)2 – 6
c)
y = 4(x + 3)2 – 6
d)
y = - 4(x - 3)2 – 6
8.
Write the equation of a parabola with a vertex at (-5, -7) that opens downward and it is compressed verticaly by a factor of 1/2.
a)
y = ½ (x + 5)2 – 7
b)
y = ½ (x + 5)2 + 7
c)
y = - ½ (x - 5)2 - 7
d)
y = -½ (x + 5)2 – 7
9.
Write the equation of a parabola in vertex form with a vertex at (-9, 2) that opens up and is stretched vertically by a factor of 3.
a)
y = - 3(x + 9)² + 2
b)
y = 3(x + 9)² - 2
c)
y = 3(x + 9)² + 2
d)
y = - 3(x + 9)² - 2
10.
Write the equation of a parabola in vertex form with a vertex at (6, -4) that opens down and is compressed vertically by a factor of ¼ .
a)
y = -¼ (x – 6)2 + 4
b)
y = -¼ (x – 6)2 – 4
c)
y = ¼ (x – 6)2 – 4
d)
y = -¼ (x + 6)2 – 4
11.
Write the equation of a parabola that has a vertex at (-2, -5) and passes through the point (4, 22). Use the formula y = a(x – h)2 + k
a)
y = ¾ (x + 2)² – 5
b)
y = - ¾ (x + 2)² – 5
c)
y = ¾ (x + 2)² + 5
d)
y = ¾ (x - 2)² – 5
12.
What is the equation of the parabola in vertex form if the equation is standard form is
y = 3x2 + 24x + 53
a)
y = 3(x + 4)² - 5
b)
y = 3(x - 4)² + 5
c)
y = 3(x + 4)² + 5
d)
y = - 3(x + 4)² + 5
13.
What is the equation of the parabola in vertex form if the equation is standard form is
y = 2x2 - 28x + 138
a)
y = 2(x + 7)² + 40
b)
y = - 2(x - 7)² + 40
c)
y = 2(x - 7)² - 40
d)
y = 2(x - 7)² + 40
14.
Which quadratic function in vertex form best represents the graph that has a vertex at (4,-1) and passes through the point (8, 3)? Use the formula y = a(x – h)2 + k
a)
f(x) = 1/4(x - 4)2 - 1
b)
f(x) = 4(x - 4)2 - 1
c)
f(x) = 4(x + 4)2 - 1
d)
f(x) = 1/4(x + 4)2 - 1
15.
What is the equation in vertex form of the parabola?