Class 10 Mathematics: Pair of Linear Equations

Answer key included

This worksheet will help you practice solving pairs of linear equations in two variables using various methods and understanding their graphical representations.

Class 10CBSEMathematicsmedium

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Class 10 · Mathematics
Name: ____________
  1. Q1.For what value of 'k' will the pair of equations 3x + 4y = 12 and (k+2)x + 8y = 10 have no solution?
    • A.k = 4
    • B.k = 2
    • C.k = 6
    • D.k = -4
  2. Q2.If a pair of linear equations is consistent, then its graph lines are either intersecting or ________.
  3. Q3.The pair of equations x = a and y = b graphically represents lines which are:
    • A.parallel
    • B.intersecting at (b,a)
    • C.coincident
    • D.intersecting at (a,b)
  4. Q4.Write the condition for which a pair of linear equations a1x + b1y + c1 = 0 and a2x + b2y + c2 = 0 has infinitely many solutions.

Preview — full sheet in the PDF

What's inside this workbook

This Class 10 Mathematics Practice contains 10 questions across 2 printable pages and includes a full answer key at medium difficulty. Aligned to the CBSE and NCERT syllabus.

How this worksheet helps your child

  • Builds confidence in core Mathematics concepts taught in Class 10 through repeated, varied practice.
  • Aligned to CBSE and NCERT — questions mirror the pattern children see in school tests and unit assessments.
  • Comes with an answer key so parents and students can self-check in minutes, without needing a teacher.
  • Pitched at medium level — use it for daily homework, weekend revision or quick exam warm-ups.

About this worksheet

Dive into the world of Class 10 Mathematics with our expertly designed practice worksheet focusing on 'Pair of Linear Equations in Two Variables'. This essential topic forms a cornerstone of algebra, teaching students how to solve real-world problems involving two unknown quantities. Aligned perfectly with the CBSE and NCERT curriculum for Class 10, this worksheet provides ample opportunities to master key problem-solving techniques. It's ideal for students looking to reinforce their understanding of linear equations, parents wanting to support their child's learning journey, and teachers seeking reliable, medium-difficulty practice material. Through a variety of exercises, your child will gain confidence in applying different methods like substitution, elimination, and graphical representation to find solutions, which is crucial for success in their examinations and future mathematical studies.

What your child will learn

  • Practice solving pairs of linear equations in two variables using substitution.
  • Apply the elimination method to find solutions for linear equation pairs.
  • Understand and interpret the graphical representation of linear equations.
  • Recognise consistent and inconsistent systems of linear equations.
  • Solve word problems by formulating and solving pairs of linear equations.

Understanding the concept

Linear equations are fundamental mathematical tools used to describe relationships where quantities change at a constant rate. When we talk about a 'pair of linear equations in two variables,' we are dealing with two separate equations, each involving two unknown quantities (like 'x' and 'y'). For instance, if you have two apples and three bananas costing 45 rupees, and another scenario where you have three apples and two bananas costing 55 rupees, you can represent these situations as a pair of linear equations. The goal is to find the unique values for both 'x' (apples) and 'y' (bananas) that satisfy *both* equations simultaneously. There are several ways to solve these pairs. The substitution method involves expressing one variable in terms of the other from one equation and substituting it into the second equation. The elimination method focuses on adding or subtracting the two equations in a way that eliminates one variable, allowing you to solve for the other. Graphically, each linear equation represents a straight line. If the two lines intersect at a single point, that point's coordinates are the unique solution to the pair of equations. If the lines are parallel, there's no solution; if they are the same line, there are infinitely many solutions. Understanding these methods helps students logically approach and solve a wide range of real-life problems.

Tips for parents & teachers

  • Encourage your child to try all methods (substitution, elimination, graphical) for a few problems to solidify their understanding.
  • Discuss the word problems with your child first to ensure they correctly identify the variables and set up the equations.
  • Review the solved examples and explanations in the NCERT textbook before attempting the worksheet if your child faces challenges.
  • For the graphical method, ensure your child uses graph paper for accuracy and labels axes and points clearly.
  • Work through one problem together, step-by-step, to demonstrate the thinking process involved in solving linear equations.

Topics covered

linear equationstwo variablescbse class 10mathematicseliminationsubstitutiongraphical method

How to use this worksheet at home

Open the print view and use your browser's Print dialog to print on regular A4 paper or save as a PDF. Hand the printed sheet to your child (Class 10) and set a relaxed time limit — 15 to 25 minutes works for most Mathematics worksheets. When they're done, open the "With answer key" view and let them self-mark question by question. Re-print as many times as you need; the file never expires and there's no download limit.

Frequently asked questions

Is this Mathematics worksheet really free?
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Is it aligned to the CBSE / NCERT syllabus?
Yes. All Class 10 worksheets are built around the CBSE and NCERT pattern so they map cleanly to what your child is studying in school.
Can I print this worksheet at home?
Yes. Click "Open print view" and use your browser's Print dialog to print on standard A4 paper, or save it as a PDF for later. The layout is designed to fit cleanly without scaling.
Does it include an answer key?
Yes — click "With answer key" to print a version with answers included, so parents and students can self-mark in minutes.

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