Equations of Straight lines

Sample Equations of Straight lines questions

A few of the 28 questions, from easier to harder. Choose your exam board and tier to practise them, with every answer marked.

1. Question 12 marksGrade 3
   Ceri says that the graphs of $y = 2$ and $y = x + 1$ cross at the point (2, 3). (a) Is she correct? (b) Give a reason for your answer.
   Show the worked solution

   At the intersection, both equations must be satisfied simultaneously. Since y = 2, substitute into y = x + 1: 2 = x + 1, so x = 1.

What are the common mistakes in Equations of Straight lines?

When a pupil makes one of these on Revision Workshop, the marking engine names the mistake and explains it, instead of just marking the answer wrong.

• Uses the reciprocal of the correct gradient

  Calculated run ÷ rise instead of rise ÷ run when working out the gradient

• Mishandles the sign of the y-intercept when reading or rearranging a linear equation

  Read the y-intercept with the wrong sign from the graph

• Confuses fixed fee with gradient

  Confused the gradient (rate of change) with the total distance shown on the graph - the gradient of a distance-time graph represents SPEED

Quick answers about Equations of Straight lines

How many Equations of Straight lines practice questions are there?

There are 28 self-marking GCSE Maths questions on Equations of Straight lines, written for AQA, Pearson, OCR across Foundation and Higher tier. Each one is marked instantly and has a full worked solution.

Do I need an account to practise Equations of Straight lines?

No. You can start practising Equations of Straight lines straight away without an account. A free account keeps your results across sessions, so you can see your progress on this topic over time.