# Investigating parallel and perpendicular lines

- Author:
- Mark Lowe, Tim Brzezinski

## Investigating parallel and perpendicular lines

An online worksheet to complete revising the properties of parallel and perpendicular lines.

## Use the applet to solve the problem below.

What is the slope of the line joining the points (2,5) and (7,15)?

## Use the applet to:

Show me the coordinates of two points for which the slope of the line between them is 3.

## Use the applet to:

Give me an equation of a line with a slope of 3.

## Using your brilliant maths skills:

Keeping your previous equation on screen, write it in a different way.

## Use the applet to answer:

What is the y-intercept of the line y = 3x +7 ?

## Using your brilliant maths skills and the applet solve:

What is the x-intercept of the line 2y = 3x −6? (Hint: what will y be equal to when the line crosses the x axis?)

## Use the applet below to:

Show me the equation of a line that is parallel to y = 2x + 4

## Use the applet below to solve:

What would be the slope of a line perpendicular to y = 2x + 4 ?

## Use the applet above to:

Show me the equations of two lines that are perpendicular to each other.