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HomeCXC CSEC MathematicsLinear Functions and Graphs – gradient, intercepts, equation of a straight line
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Linear Functions and Graphs – gradient, intercepts, equation of a straight line
Practice Questions

20 CXC CSEC Mathematics questions on Linear Functions and Graphs – gradient, intercepts, equation of a straight line, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Linear Functions and Graphs – gradient, intercepts, equation of a straight line

Question 1 · 1 mark · Difficulty 1/3

A farmer in Guyana plots the growth of a sugar cane crop over time. The graph shows a straight line passing through the origin with the equation y = 2.5x, where y is the height in metres and x is the time in months. What does the value 2.5 represent?

  1. The initial height of the crop
  2. The gradient of the line
  3. The y-intercept of the line
  4. The x-intercept of the line
Show answer & explanation
✓ Answer: BThe gradient of the line
Award 1 mark for identifying that in y = mx + c, the coefficient of x is the gradient. A is incorrect — the initial height would be the y-intercept, which is 0 in this case. C is incorrect — the y-intercept is 0, not 2.5. D is incorrect — the x-intercept is also 0 since the line passes through the origin.
Question 2 · 1 mark · Difficulty 1/3

Which of the following is the equation of a straight line with gradient -3 and y-intercept 7?

  1. y = 7x - 3
  2. y = -3x + 7
  3. y = 3x + 7
  4. y = -3x - 7
Show answer & explanation
✓ Answer: By = -3x + 7
Award 1 mark for correct substitution into y = mx + c where m = -3 and c = 7. A is incorrect — the gradient and intercept are interchanged. C is incorrect — the gradient should be negative. D is incorrect — the y-intercept should be positive.
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CXC CSEC Mathematics: Linear Functions and Graphs – gradient, intercepts, equation of a straight line FAQ

How many CXC CSEC Mathematics questions on Linear Functions and Graphs – gradient, intercepts, equation of a straight line are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Linear Functions and Graphs – gradient, intercepts, equation of a straight line for CXC CSEC Mathematics, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CXC paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CXC CSEC students preparing for Mathematics?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Linear Functions and Graphs – gradient, intercepts, equation of a straight line practice with other Mathematics topics or even switch to a totally different CXC subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Linear Functions and Graphs – gradient, intercepts, equation of a straight line questions aligned to the official CXC CSEC Mathematics syllabus?
Every question is written against the published CXC CSEC Mathematics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CXC paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CXC.
How is Linear Functions and Graphs – gradient, intercepts, equation of a straight line typically tested on CXC CSEC Mathematics papers?
Linear Functions and Graphs – gradient, intercepts, equation of a straight line appears across multiple question types on real CXC CSEC Mathematics papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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