SWBAT calculate the gradient, intercepts, equation of a 2D line, and find a point of intersection in writing from two points DO Now:

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Presentation transcript:

SWBAT calculate the gradient, intercepts, equation of a 2D line, and find a point of intersection in writing from two points DO Now:

Gradient

Gradient from a Graph Find two points ON THE LINE! – For best results, try to choose points that have integer coordinates (where the gridlines meet) A)Method 1: Draw a right triangle from the one point to the next and count the spaces for each variable. B)Method 2: Use the formula to calculate the slope more accurately from the coordinates of both points.

Gradient from a Table Determine the change in the dependent variable = Δy Determine the change in the independent variable = Δx Divide to determine the ratio

Gradient from Two Points

Special Gradients

Homework: P. 90 Exercise 3A P. 91 Exercise 3B (2-4) P. 92 Exercise 3C P. 94 Exercise 3D (2, 3, 4, 6, 7)