Here are sketches of five graphs - OCR - GCSE Maths - Question 7 - 2021 - Paper 1
Question 7
Here are sketches of five graphs.
Write the letter of the graph that represents the following relationships.
(a) y is directly proportional to x.
Worked Solution & Example Answer:Here are sketches of five graphs - OCR - GCSE Maths - Question 7 - 2021 - Paper 1
Step 1
(a) y is directly proportional to x.
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Answer
To find the graph where y is directly proportional to x, we look for a linear relationship where the line passes through the origin (0,0).
In this case, Graph C meets the requirement as it represents a straight line that starts at the origin and has a positive slope. This means that as x increases, y increases at a constant rate, clearly indicating a direct proportionality.