1 pt
DOK: 2

1.

Given the function: $f\left(x\right)=\left\{\begin{array}{ll}-x& ifx0\\ {x}^{2}-4& ifx\ge 0\end{array}\right.$ and the function *g*(*x*) graphed below, which function has the most solutions at *y*=0?

A

*f*(*x*)

B

*g*(*x*)

C

The two functions have the same number of solutions.

D

Cannot answer without more information

1 pt
DOK: 3

2.

Find the line that passes through the points (2, 14) and (5, 23).

A

*y*=2*x*+14

B

*y*=3*x*+8

C

*y*=5*x*+23

D

*y*=-3*x*-8

1 pt
DOK: 3

3.

Find the quadratic function that has the vertex (−3, 0) and passes through the point (9, 144).

A

$y={(x-3)}^{2}$

B

$y={(x-9)}^{2}+144$

C

$y={x}^{2}+3$

D

$y={(x+3)}^{2}$

1 pt
DOK: 2

4.

Given the function $f\left(x\right)={x}^{2}+4x+3$ and the table below, which function has the smaller minimum?

A

*f*(*x*)

B

*g*(*x*)

C

The two functions have the same minimum.

D

Cannot answer without more information

1 pt
DOK: 2

7.

If $f\left(x\right)=5{x}^{2}+15x$ and $g\left(x\right)=5x$, then what is $f\left(x\right)\xf7g\left(x\right)$?

A

5*x*+3

B

*x*+3

C

5*x*+5

D

*x*+5