Straight Line Graphs - GCSE Maths - Steps & Examples - Free Printable

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- The general equation for a straight line is y = mx + c, where m is the gradient and c is the y-intercept.
- For the given example, y = 2x + 1, the gradient (m) is 2 and the y-intercept (c) is 1.
- The graph shows a straight line that crosses the y-axis at (0, 1), confirming the y-intercept.
- The positive gradient of 2 means the line rises 2 units vertically for every 1 unit it moves horizontally to the right.
- Points on the line, such as (1, 3) and (-1, -1), satisfy the equation y = 2x + 1.

Parent Tip: Review the logic above to help your child master the concept of graphing linear equations formula.

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