7th Grade Functions- CP Wk 15

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Quizzes Created: 1 | Total Attempts: 378

Questions: 10 | Attempts: 378 | Updated: Oct 22, 2024

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Review for DCA- coordinate plane and functions

Questions and Answers

1.

What are the coordinates of Point T?
- A.
  
  (2, -6)
- B.
  
  (2, 6)
- C.
  
  (-6, 2)
Correct Answer
A. (2, -6)

Explanation
The coordinates of Point T are (2, -6).

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2.

What are the coordinates of Point F?
- A.
  
  (1, 4)
- B.
  
  (4, 1)
- C.
  
  (4, -1)
Correct Answer
B. (4, 1)

Explanation
The coordinates of Point F are (4, 1) because the x-coordinate is 4 and the y-coordinate is 1. This means that Point F is located 4 units to the right and 1 unit up from the origin (0, 0) on a coordinate plane.

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3.

What are the coordinates of Point U?
- A.
  
  (6, 4)
- B.
  
  (-4, 6)
- C.
  
  (6, -4)
Correct Answer
C. (6, -4)

Explanation
The coordinates of Point U are (6, -4). This is determined by the ordered pair (x, y), where x represents the horizontal position and y represents the vertical position. In this case, the x-coordinate is 6, indicating that Point U is 6 units to the right of the origin. The y-coordinate is -4, indicating that Point U is 4 units below the origin.

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4.

Which quadrant contains Point B?
- A.
  
  Quadrant I
- B.
  
  Quadrant II
- C.
  
  Quadrant III
Correct Answer
B. Quadrant II

Explanation
Point B is located in Quadrant II because it has negative x-coordinate and positive y-coordinate. In Quadrant II, the x-coordinate is negative and the y-coordinate is positive.

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5.

Point J lies in what quadrant?
- A.
  
  Quadrant IV
- B.
  
  Quadrant III
- C.
  
  Quadrant I
Correct Answer
B. Quadrant III

Explanation
Point J lies in Quadrant III because in the Cartesian coordinate system, Quadrant III is the region where the x-coordinate is negative and the y-coordinate is also negative. Since no specific coordinates are given for Point J, we can assume that it falls in Quadrant III based on the given answer.

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6.

Complete the function table y = x + 6 x y 2 8 4 10 7 13 10 ?
- A.
  
  12
- B.
  
  14
- C.
  
  16
Correct Answer
C. 16

Explanation
The function table follows a pattern where the value of y is obtained by adding 6 to the value of x. For example, when x is 2, y is 8 (2 + 6 = 8). Similarly, when x is 4, y is 10 (4 + 6 = 10). Applying the same pattern, when x is 10, y would be 16 (10 + 6 = 16).

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7.

Complete the function table y = 3x x y 2 6 5 15 8 24 10 ?
- A.
  
  13
- B.
  
  30
- C.
  
  -30
Correct Answer
B. 30

Explanation
The function table is asking for the value of y when x is 10. To find this, we can use the given equation y = 3x and substitute x = 10. Therefore, y = 3 * 10 = 30.

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8.

Complete the table x Rule y 3 2x + 2 8 4 2x + 2 10 5 2x +2 ?
- A.
  
  11
- B.
  
  12
- C.
  
  14
Correct Answer
B. 12

Explanation
The rule given is 2x + 2, which means that for any value of x, the corresponding value of y is obtained by multiplying x by 2 and adding 2. In the given table, the value of x is 5. Plugging this value into the rule, we get 2(5) + 2 = 10 + 2 = 12. Therefore, the missing value of y is 12.

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9.

Complete the table x Rule y 1 5x - 4 1 2 5x - 4 6 3 5x - 4 ?
- A.
  
  11
- B.
  
  8
- C.
  
  9
Correct Answer
A. 11

Explanation
The rule in the table is given as 5x - 4. To find the value of y for the third row, we substitute x = 3 into the rule. Therefore, y = 5(3) - 4 = 15 - 4 = 11.

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1
0
10.

5, 10, 15, 20What would be the next number in the sequence?
- A.
  
  15
- B.
  
  20
- C.
  
  25
Correct Answer
C. 25

Explanation
The given sequence is increasing by 5 each time. Starting from 5, the next number is 10, then 15, and then 20. Therefore, the next number in the sequence would be 25.

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