Chapter 19 Proportions and graphs
19.5 Non-linear Graphs
A nonlinear function is a function whose graph is not a straight line. The tangent to a curved graph is a straight line that touches the graph at a point. The gradient at a point on a curve is the gradient of the tangent at that point. In this section, we learn about Introduce the concept of tangent to a curve at a particular point, Discuss using an interactivity the tangent to a curve at a particular point, Find a gradient to a curve at a particular point, tangents.
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A nonlinear function is a function whose graph is not a straight line. The tangent to a curved graph is a straight line that touches the graph at a point. The gradient at a point on a curve is the gradient of the tangent at that point. In this section, we learn about Introduce the concept of tangent to a curve at a particular point,  Discuss using an interactivity the tangent to a curve at a particular point, Find a gradient to a curve at a particular point, tangents.
Calculating the gradient of a tangent at a point. Estimating the area under a non-linear graph.
Non-linear Graphs - tangent to a curve at a particular point, interactivity the tangent to a curve at a particular point, gradient to a curve at a particular point, tangents.