# A9a – Plotting straight line graphs

This is the students’ version of the page. Log in above for the teachers’ version.

# Part 1 – Vertical and horizontal lines

Teacher resources for Part 1
• Coordinate grids – one quadrant (0 to 10) – for Alpha Exercise:
• Coordinate grids – four quadrants (-10 to 10) – for Beta and Gamma Exercises:

• Slides in PPTX (with click-to-reveal answers)
• Slides in PDF (one slide per page, suitable for importing into IWB software)
• Worksheet (with space for student work)
• Handout (slides with exercises only; 4 per page for reduced printing) Interactive GeoGebra activity: Horizontal and vertical lines and coordinates

# Part 2 – Lines of the form y = mx + c

Teacher resources for Part 2
• Coordinate grids – one quadrant (0 to 10) – for Alpha Exercise:
• Coordinate grids – four quadrants (-10 to 10) – for Beta and Gamma Exercises:

• Slides in PPTX (with click-to-reveal answers)
• Slides in PDF (one slide per page, suitable for importing into IWB software)
• Worksheet (with space for student work)
• Handout (slides with exercises only; 4 per page for reduced printing) Interactive GeoGebra activity: Finding the gradient of a straight line

What is the gradient of the line shown?

Interactive GeoGebra activity: Identifying equations of straight line graphs

What is the equation of the line shown?

Interactive GeoGebra activity: Straight line graphs and coordinates
Interactive GeoGebra activity: Draw the line - RECOMMENDED ACTIVITY!

Drag the blue points to match the equation given. The line will turn green if you get it correct! Click the “New line” button to have another go.

With thanks to Steve Phelps, whose Graph the Line worksheet is available here. Material modified and embedded here under the CC-BY-SA 3.0 license.

# Part 3 – Lines of the form ax + by = k

Teacher resources for Part 3
• Coordinate grids – one quadrant (0 to 10) – for Alpha Exercise:
• Coordinate grids – four quadrants (-10 to 10) – for Beta and Gamma Exercises: