For each graph below, select its possible equation from this list - OCR - GCSE Maths - Question 15 - 2021 - Paper 1
Question 15
For each graph below, select its possible equation from this list.
A $y = x^3$
B $y = -2$
C $y = x$
D $x = 2$
E $y = x^2$
F $y = 2x + 1$
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Worked Solution & Example Answer:For each graph below, select its possible equation from this list - OCR - GCSE Maths - Question 15 - 2021 - Paper 1
Step 1
Graph 1: Identify the equation
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Answer
The graph opens upwards and has a vertex at the origin, suggesting a parabolic equation. The correct equation is E:y=x2.
Step 2
Graph 2: Identify the equation
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Answer
This graph represents a horizontal line, indicating a constant value for y. The correct equation is B:y=−2.
Step 3
Graph 3: Identify the equation
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Answer
The straight line goes through the origin with a slope of 1, corresponding to the linear equation. The correct equation is C:y=x.
Step 4
Graph 4: Identify the equation
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Answer
This graph depicts a vertical line at x=2. The correct equation is D:x=2.
