Math 8 Review #1 (21-22 Benchmark)

Which value of 𝒙 makes the equation 𝟔(𝒙 − 𝟐) = 𝟑 − 𝟗𝒙 true?

Which statement is true?

• All real numbers have decimal expansions.

• Only fractions have decimal expansions.

• Only integers and fractions have decimal expansions.

• Only integers have decimal expansions.

Which table represents a nonlinear function?

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Consider the graph.

Which statement is true?

• When 𝑥 is between −2 and 1, the function is decreasing, and when 𝑥 is between 3 and 6, the function is decreasing.

• When 𝑥 is between −2 and 1, the function is decreasing, and when 𝑥 is between 3 and 6, the function is increasing.

• When 𝑥 is between −2 and 1, the function is increasing, and when 𝑥 is between 3 and 6, the function is decreasing.

• When 𝑥 is between −2 and 1, the function is increasing, and when 𝑥 is between 3 and 6, the function is increasing.

Which table represents a function?

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Triangles 𝑸𝑹𝑺 and 𝑺𝑻𝑼 are shown on the coordinate plane

A fencing company charges a one-time fee of $𝟏, 𝟓𝟎𝟎 for labor plus an additional $𝟓𝟓 per yard of fence. Which function represents the total cost, 𝑻, of installing 𝒔 yards of fencing?

• 𝑇 = 55𝑠 − 1,500

• 𝑇 = 55𝑠 + 1,500

• 𝑇 = 1,500𝑠 − 55

• 𝑇 = 1,500𝑠 + 55

A coach creates a scatter plot to show the number of free throws a player makes in a game and the number of shots the player practiced during the week before the game.

Which linear model best fits the data?

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For a science experiment, two plants, starting at different heights, are given different types of fertilizers. At the start of the experiment, Plant 𝟏 is 𝟐 inches tall and grows at a rate of 𝟏. 𝟓 inches per week. The table represents the height of Plant 𝟐.

At the start of the experiment, how much taller is Plant 𝟐 than Plant 𝟏?

• 3.5 inches

• 3 inches

• 2 inches

• 1.5 inches

Parallelogram 𝑹𝑺𝑻𝑼 is located on the coordinate plane, and the measure of angle 𝑺 is 𝟗𝟖°. If the parallelogram is reflected across the 𝒙-axis to form parallelogram 𝑹′𝑺′𝑻′𝑼′, what is the measure of angle 𝑺′?

• 49°

• 82°

• 98°

• 196°