North Carolina Math 3 EOC Chapter 4

1 pt

1.

What is another way of writing $x={a}^{y}$?

A

$x={\mathrm{log}}_{a}y$

B

$x={\mathrm{log}}_{a}a$

C

$x={\mathrm{log}}_{a}x$

D

$x={\mathrm{log}}_{x}a$

1 pt

3.

The graphs of a function and its inverse are symmetrical with respect to which of the following lines?

A

The *x*-axis

B

The *y*-axis

C

The line *y*=-*x*

D

The line *y*=*x*

1 pt

4.

The expression ln *c* - ln *d* is equal to which of the following?

A

$\mathrm{ln}(c-d)$

B

$\mathrm{ln}(c+d)$

C

$\mathrm{ln}(c\times d)$

D

$\mathrm{ln}(c\xf7d)$

1 pt

7.

Transformations were applied to the graph of the funtion $f\left(x\right)={60}^{x}$ to produce each of the following functions. Which of them has undergone a vertical compression?

A

$f\left(x\right)=\left(\frac{1}{3}\right)\left({60}^{x}\right)$

B

$f\left(x\right)={60}^{\frac{x}{3}}$

C

$f\left(x\right)={60}^{3x}$

D

$f\left(x\right)=\left(3\right)\left({60}^{x}\right)$