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# Form 2 Mathematics equations of straight lines online lessons

Determining equations of straight lines

(6m 19s)## Download as pdf file

**Answer Text:**

-Equations of a straight line can be determined:

1. When given two points through which the line passes.

2. When given one point through which the line passes through and the gradient of the line.

-The standard form of writing the equation of a straight line is y =mx + c, where m and c are constants

Example 1. Find the equation of the line through the points A (1, 3) and B (2, 8)

Example 2 Determine the equation of a line with gradient 3, passing through the point (1, 5).