2.3.3

Solve Linear Equations Graphically

Test yourself

Solving Linear Equations Graphically

Illustrative background for One lineIllustrative background for One line ?? "content

One line

  • To solve a linear equation, plot the line and see where it crosses the x axis.
  • The line y = 2x - 4 crosses the x axis at (2, 0) so the solution is x = 2.
Illustrative background for Two linesIllustrative background for Two lines ?? "content

Two lines

  • For an equation where x is on both sides, plot both lines and find the x-coordinate of the point where they intersect.
Illustrative background for Two lines - exampleIllustrative background for Two lines - example ?? "content

Two lines - example

  • The example shows 2x + 2 = x + 3. Both lines are plotted.
Illustrative background for Two lines - exampleIllustrative background for Two lines - example ?? "content

Two lines - example

  • They intersect at (1, 4) so the solution is x = 1.

Jump to other topics

1Number

1.1Place Value

1.2Factors & Multiples

1.3Operations

1.4Fractions, Decimals & Percentages

1.5Growth & Decay

1.6Measurements & Units

1.7Accuracy

2Algebra

3Ratio, Proportion & Rates of Change

4Geometry & Measures

5Probability

6Statistics

Unlock your full potential with Seneca Premium

  • Unlimited access to 10,000+ open-ended exam questions

  • Mini-mock exams based on your study history

  • Unlock 800+ premium courses & e-books

Get started with Seneca Premium