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Here is a function - OCR - GCSE Maths - Question 8 - 2018 - Paper 1

Question 8

Here is a function. The input is x and the output is y. $x + 3$ → $y$ Write an algebraic expression for y in terms x.

Worked Solution & Example Answer:Here is a function - OCR - GCSE Maths - Question 8 - 2018 - Paper 1

Step 1

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Answer

To find the algebraic expression for y, we start with the input x. The first operation is adding 3 to x. This can be represented as:

$x + 3$

Next, we take the result of this addition and then add 9. Therefore, the expression for y becomes:

$y = (x + 3) + 9$

We can simplify this further:

$y = x + 12$

Thus, the final answer for y in terms of x is:

$y = x + 12$

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