1 pt

1.

When the scale factor of a dilation is greater than 1, the image is a(n)...

A

reduction

B

enlargement

C

rotation

D

reflection

1 pt

2.

The larger triangle is transformed onto the smaller, similar one. Find the length of the smaller one’s hypotenuse?

A

2

B

3

C

4

D

5

1 pt

4.

Simplify: [{left( {rac{{3{x^8}{y^2}}}{{9{x^6}{y^5}}}} ight)^3}]

A

[left( {rac{{{x^2}}}{{3{y^3}}}} ight)]

B

[left( {rac{{3{x^5}}}{{9{y^6}}}} ight)]

C

[left( {rac{{{x^6}}}{{27{y^9}}}} ight)]

D

[left( {rac{{{x^2}}}{{27{y^3}}}} ight)]

1 pt

6.

How many roots does the quadratic equation [{x^2} - 2x - 2 = 0], have?

A

1

B

2

C

none

D

3

1 pt

8.

Solve [{x^2} - 14x - 21 = 0] by completing the square

A

[x = 2 pm 7sqrt 2 ]

B

[x = 3 pm sqrt 7 ]

C

[x = - 14 pm sqrt 7 ]

D

[x = 7 pm 2sqrt 7 ]