AnswersJHS-Algebra 1A full yearZero and Negative Exponents

Zero and Negative Exponents — Cumulative exam Answers

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Which table represents a direct variation function?

A
A table with 6 columns and 2 rows. The first row, x, has the entries, negative 3, negative 1, 2, 5, 10. The second row, y, has the entries, negative 4.5, negative 3.0, negative 1.5, 0.0, 1.5.
Option A
B
A table with 6 columns and 2 rows. The first row, x, has the entries, negative 5.5, negative 4.5, negative 3.5, negative 2.5, negative 1.5. The second row, y, has the entries, 10, 8, 6, 4, 2.
Option B
C
A table with 6 columns and 2 rows. The first row, x, has the entries, negative 5.5, negative 5.5, negative 5.5, negative 5.5, negative 5.5. The second row, y, has the entries, negative 3, negative 1, 2, 5, 10.
Option C
D
A table with 6 columns and 2 rows. The first row, x, has the entries, negative 3, negative 1, 2, 5, 10. The second row, y, has the entries, negative 7.5, negative 2.5, 5.0, 12.5, 25.0.
Option D
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Wren recorded an outside temperature of –2°F at 8 a.m. When she checked the temperature again, it was 4°F at 12:00 p.m. If x represents the time and y represents the temperature in degrees Fahrenheit, what is the slope of the line through these two data points?

A
–1.5
B
–0.5
C
0.5
D
1.5
43

Which linear function has the greatest y-intercept?

A
y + 6 y = 36
Option A
B
y = 15 x + 5
Option B
C
3 x + 8 y = 24
Option C
D
y = 4 x + 7
Option D
44

What are the slope and the y-intercept of the linear function that is represented by the equation ?

Question illustration
A
The slope is , and the y-intercept is 4.
Option A
B
The slope is , and the y-intercept is 4.
Option B
C
The slope is 4, and the y-intercept is .
Option C
D
The slope is 4, and the y-intercept is .
Option D
45

Raquel throws darts at a coordinate grid centered at the origin. Her goal is to create a line of darts. Her darts actually hit the coordinate grid at (–5, 0), (1, –3), (4, 5), (–8, –6), (0, 2), and (9, 6). Which equation best approximates the line of best fit of the darts?

A
y = 0.6x + 0.6
B
y = 0.1x + 0.8
C
y = 0.8x + 0.1
D
y = 0.5x + 0.6

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