| |
| |
1. |
What is true about the graphs of y = 2x2 and y = -2x2? |
| |
|
A. |
y = 2x2 opens downward and y = -2x2 opens upward. |
| |
|
B. |
y = 2x2 opens to the right and y = -2x2 opens to the left. |
| |
|
C. |
y = 2x2 opens to the left and y = -2x2 opens to the right. |
| |
|
D. |
y = 2x2 opens upward and y = -2x2 opens downward. |
| |
|
Hint |
|
| |
2. |
Consider the function y = 2x2 + 3. Which ordered pairs from the set
{(-4, 35), (-3, 20), (-2, 11), (5, 52)} are solutions? |
| |
|
A. |
{(-4, 35), (-3, 20)} |
| |
|
B. |
{(-4, 35), (5, 52)} |
| |
|
C. |
{(-4, 35), (-2, 11)} |
| |
|
D. |
{(-2, 11), (-3, 20)} |
| |
|
Hint |
|
| |
3. |
What is the multiplicative inverse of x? |
| |
|
A. |
x × 1 |
B. |
 |
| |
|
C. |
1 × x |
D. |
x |
| |
|
Hint |
|
| |
4. |
Use the graph to find the solution to 35 = 20x + 3. |
| |
|
 |
| |
|
A. |
x = 2.5 |
B. |
x = 1.2 |
| |
|
C. |
x = 2.1 |
D. |
x = 1.6 |
| |
|
Hint |
|
| |
5. |
Use the graph to find the positive solution to 475 = 4.9x2. |
| |
|
 |
| |
|
A. |
x = 9.3 |
B. |
x = 8.1 |
| |
|
C. |
x = 8.9 |
D. |
x = 9.8 |
| |
|
Hint |
|
|
|