AnswersQ1 Mathematics 8Standard Form

Standard Form — Unit test Answers

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A line has a slope of and passes through the point (–5, 4). Which is the equation of the line?

Question illustration
A
y = negative three-fourths x + one-fourth
Option A
B
y = negative three-fourths x + 4
Option B
C
y = negative three-fourths x minus 2
Option C
D
y = negative three-fourths x minus one-fourth
Option D
2
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The table of values below represents a linear function and shows the height of a tree since it was transplanted. What was the height of the tree when it was transplanted?Height of a Tree Since It Was TransplantedYears Since the Tree Was Transplanted44.555.56Height (feet)1213141516

A
1 foot
B
2 feet
C
4 feet
D
8 feet
3

Which equation represents a line with a slope of zero?

A
y = 2 x
Option A
B
y = negative one-half x + one-half
Option B
C
y = 4
Option C
D
x = negative 5
Option D
4

Sung-Hi is filling a sandbox with sand at the rate shown in the table below. Which statement must be true regarding the linear function that represents this situation?Amount of Sand in the SandboxNumber of Minutes Since Sung-Hi Started01234Amount of Sand in the Sandbox (pounds)200220240260280

A
The initial value must be 0 pounds.
B
The initial value must be 20 pounds.
C
The rate of change must be 0 pounds per minute.
D
The rate of change must be 20 pounds per minute.
5

Which representation represents a proportional relationship?Ax2468y681012BCDx471215y8142430

Question illustration
A
A
B
B
C
C
D
D
6

Li believes that the graph shows a direct variation.Why is Li incorrect in saying that the graph shows a direct variation?

Question illustration
A
The graph does not have a constant rate of change.
B
When the x-value is 0, the y-value is 1.
C
The slope is negative.
D
The relationship is proportional.
7

A line passes through the points (–2, –8) and (–4, –8). Which shows the graph of this line?

A
On a coordinate plane, a vertical line is at x = negative 2.
Option A
B
On a coordinate plane, a horizontal line is at y = negative 2.
Option B
C
On a coordinate plane, a vertical line is at x = negative 8.
Option C
D
On a coordinate plane, a horizontal line is at y = negative 8.
Option D

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