We look in this section at how to calculate coordinates and plot straight line graphs.
We also look at the gradient and intercept of a straight line and the equation of a straight line.
The gradient of a line is a measure of its steepness. The intercept of a line is the value where the line crosses the y-axis.
The equation of a straight line is y = mx + c, where
m = gradient and c = intercept (where the line crosses the y-axis).
Draw the graph with equation y = 2x + 3.
Calculate the gradient of each of the following lines:
Determine the equation of each of the following lines: