# Plotting Straight Lines from Two Points # Plotting Straight Lines from Two Points

Students begin to plot equations in the form ax + by + c = 0 substituting in x =0  along the y axis and y = 0 along the x axis .  The resultant line is joined between the two coordinates to represent the function.  As learning progresses students consider the gradient and intercept of the graph from its equation.
##### Differentiated Learning Objectives
• All students should be able to plot a straight-line graph in the form ax+by=c using two points on the axes.
• Most students should be able to plot a positive or negative graph in the form ax±by=c using two points on the axes.
• Some students should be able to plot graphs in the form of ±ax±by=±c where the variables are not integers.
SKU: 231

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