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- 1. Multiple-choice30 seconds1 pt
Which of the following statements about the graph of x = 3 is FALSE.

The line is vertical

The slope is undefined

The graph is parallel to the x-axis

- 2. Multiple-choice30 seconds1 pt
What is the equation of the line that contains the point (-2, 5) and has a slope of -3?

$y-5=-3(x+2)$$y+5=-3(x-2)$

$y+2=-3(x-5)$

$y-2=-3(x+5)$

- 3. Multiple-choice30 seconds1 pt
Which equation can be represented by the graph shown?

$6x-8y=24$

$6x+8y=24$

$-6x+8y=24$

$-6x-8y=24$

- 4. Multiple-choice30 seconds1 pt
If the trend in the graph continues, what will be the water level on day 18? (Hint: turn the points into a table on Desmos)

20.5 ft

19.25 ft

21.02 ft

18 ft.

- 5. Multiple-choice30 seconds1 pt
Which linear equation passes through (4, 7) and is perpendicular to y = 4x - 8?

$y=-\frac{1}{4}x+8$

$y=\frac{1}{4}x-8$

$y=4x-9$

$y=4x+3$

- 6. Multiple-choice30 seconds1 pt
In which situation is both correlation and causation likely?

hours spent studying and your test grade

number of shoes you own and the size of your feet

ice cream sales and number of sunburns

number of schools and a city's population

- 7. Multiple-choice30 seconds1 pt
If y varies directly with x, and y = 15 when x = 27, what is the value of x when y = 85?

153

47.2

4.7

1.8

- 8. Multiple-choice30 seconds1 pt
What is the equation of the line of best fit for the data in the table?

$y=-0.54x+19.80$

$y=0.96x-0.98$

$y=19.80x-0.54$

$y=0.54x-19.80$

- 9. Multiple-choice30 seconds1 pt
Which statement is true about the correlation coefficient of the data?

$r=-0.98$ ; the relationship between age and body mass has a strong negative correlation.

$r=-0.98$ ; the relationship between age and body mass has a strong positive correlation.

$r=0.98$ ; the relationship between age and body mass has a strong negative correlation.

$r=0.98$ ; the relationship between age and body mass has a strong positive correlation.

- 10. Multiple-choice30 seconds1 pt
What is the zero (x-intercept) of $g\left(x\right)\ =\ \frac{2}{3}x-10$

15

-10

0

2/3

- 11. Multiple-choice30 seconds1 pt
Write an equation for the following situation:

At a restaurant jars of tomato sauce are stored in boxes in the pantry. Each box contains 8 jars of tomato sauce. A cook uses 2 jars from one of the boxes.

$y=8x+6$

$y=8x$

$y=8x-2$

$y=6x$

- 12. Multiple-choice30 seconds1 pt
Line a passes through the points (4,5) and (1,6)

Line b passes through the points (1,3) and (5,9)

Which of the following statements is true?

Lines a and b are parallel

Lines a and b are perpendicular

Lines a and b intersect but are not perpendicular

Lines a and b are the same line