Linear Graphs

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What does a negative gradient indicate?

A negative gradient indicates that the line falls as you move from left to right.

What does it mean if the gradient is zero?

If the gradient is zero, the line is horizontal, indicating no change in y as x changes.

What is the formula to calculate the gradient between two points (x1, y1) and (x2, y2)?

The gradient (m) can be calculated using the formula $m = \frac{y_2 - y_1}{x_2 - x_1}$.

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