1. For each line fill in your answers to the following questions in the table below: (Line E has been done for you.)

(i) Write down the coordinates (0; c) of the point of intersection of the line with the y-axis (the y intercept).

(ii) Choose two points on the line $(x_1;y_1), (x_2;y_2)$. Find the gradient of the line from the formula $m=\frac{y_2-y_1}{x_2-x_1}$.

(iii) Use the values of c and m you have found to write the equation of the line in the form $y = mx + c$.

2. What do you notice when you compare the equations of these lines?

3. Copy the graphs below and fill in the coordinates of the points.

What are the gradients of the x-axis, the y-axis and the other 4 lines shown?

Write down the equations of the x-axis, the y-axis and the other 4 lines shown.

See the Notes for Teachers

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### One Response to Lines

1. Nontsikelelo says:

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