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Exam Tips for y = mx + c

Part of y = mx + cGCSE Mathematics

This exam tips covers Exam Tips for y = mx + c within y = mx + c for GCSE Mathematics. Revise y = mx + c in Graphs for GCSE Mathematics with 10 exam-style questions and 20 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 8 of 9 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.

Topic position

Section 8 of 9

Practice

10 questions

Recall

20 flashcards

💡 Exam Tips for y = mx + c

  • Check signs carefully: Is it +c or -c? Is m positive or negative?
  • Read intercepts accurately: Use the grid lines to find exact values
  • Show gradient calculations: Always write out the rise/run fraction
  • Verify your answer: Substitute a point from the line into your equation
  • Label your answer clearly: Write "The equation is y = ..."
  • Use fractions when necessary: Don't always convert to decimals

Keep building this topic

Read this section alongside the surrounding pages in y = mx + c. That gives you the full topic sequence instead of a single isolated revision point.

Practice Questions for y = mx + c

For the line y = 3x – 2, what is the gradient?

  • A. –2
  • B. 3
  • C. 2
  • D. –3
1 markfoundation

Two students write down equations for parallel lines: Student A writes: y = 2x + 1 Student B writes: y = 2x + 1 Explain why these two lines are NOT parallel to each other.

2 markshigher

Quick Recall Flashcards

What gradient gives a 45° line?
m = 1 (rises 1 unit for every 1 unit across)
What is special about y = mx?
It passes through the origin (0, 0) because c = 0.

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