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(a) Find the values of: (1,4), (-5,0), (2,-9), (3,-6), (0,-9) - Edexcel - GCSE Maths - Question 9 - 2022 - Paper 1
Question 9
(a) Find the values of: (1,4), (-5,0), (2,-9), (3,-6), (0,-9). (b) Graph drawn: (b1) (1) drop an B1 in (a) for plotting at least 5 of the points from their ta... show full transcript
Worked Solution & Example Answer:(a) Find the values of: (1,4), (-5,0), (2,-9), (3,-6), (0,-9) - Edexcel - GCSE Maths - Question 9 - 2022 - Paper 1
Step 1
Find the values of: (1,4), (-5,0), (2,-9), (3,-6), (0,-9)
Answer
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Identify the Equation: Start with the given function to find the necessary values.
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Substitute Each Point:
- For (1, 4): Substitute x = 1 and compute the corresponding y value.
- For (-5, 0): Substitute x = -5 and compute y value.
- For (2, -9): Substitute x = 2 and compute y value.
- For (3, -6): Substitute x = 3 and compute y value.
- For (0, -9): Substitute x = 0 and compute y value.
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Summarize the Results: Verify the points calculated.
The resulting values will be validated against the original function.
Step 2
Graph drawn:
Answer
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Setup the Graph: Start with a grid aligned in both positive and negative directions, marking appropriate intervals.
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Plotting Points: Use the computed values from part (a) to place points on the graph. Ensure at least 5 points are accurately plotted based on previous calculations.
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Connect the Points: Use a smooth line to connect these points, illustrating the relationship defined by the function. Make sure to reflect any changes in direction, and maintain continuity.
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Review: Verify that the drawn curve is a continuous function, capturing the range of points accurately.
Step 3
(1) drop an B1 in (a) for plotting at least 5 of the points from their table correctly.
Answer
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Recognition of Points: Confirm that at least five points from the calculations in part (a) are represented accurately.
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Graph Assessment: Ensure that these points directly correlate to the plotted values on the grid provided.
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Conclusion: If five points are correctly plotted, then the assignment of B1 can be accepted accordingly.