Coordinates & Straight-Line Graphs

Interactive macro-enabled MS-Excel spreadsheet. Contents: Read or plot (x, y) coordinates in the 1ˢᵗ quadrant or all 4 quadrants. Find the equation of a line parallel to the axes or main diagonal. Find the equation of 2 lines parallel to the axes or main diagonal. Generate coordinates & plot a straight-line graph on +ve axes. Generate coordinates & plot 2 straight-line graphs on +ve axes. Generate coordinates & plot a straight-line graph on ±ve axes. Generate coordinates & plot 2 straight-line graphs on ±ve axes. Find the gradient of 2 straight-line segments on +ve or ±ve axes. Find the gradient, y-intercept & equation of a straight-line graph. Find the equation & point of intersection of 2 straight-line graphs. Find the equation & point of intersection of 4 straight-line graphs. Draw the straight-line graph of an equation of the form ax + by = c. Draw the straight-line graph of 2 equations of the form ax + by = c.