y-intercept
What y-intercept means in Mathematics GCSE, as defined for AQA, Pearson Edexcel.
Definitions of y-intercept
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Reference: Pearson Edexcel
The value of y where the line meets the y axis, which is the number on its own once the equation has y by itself.
The value 'c' in the linear function y = mx + c, read from a graph or stated as coordinates.
The value of y when x = 0, which is c in y = ax² + bx + c.
The y-value when x = 0, where the line crosses the y-axis.
Found by putting x = 0 into the equation.
The value of y where a graph crosses the vertical axis, found when x = 0; it is c in y = mx + c.
Topics that use y-intercept
- Graphs (AQA GCSE)
- Algebra - Graphs (Pearson Edexcel GCSE)
- Ratio, proportion and rates of change (Pearson Edexcel GCSE)
Related terms
- Asymptote
- Gradient
- Asymptotes
- average rate of change
- Chord
- completing the square
- coordinate plane
- Displacement
Using y-intercept in the exam
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