Any line with a gradient of 3 will be parallel to \(y = 3x + 7\). Two examples are \(y = 3x - 2\) and \(y = 3x + 11.6\). Find the equation of a straight line that is perpendicular to \(y = 2x + 1\).

Save guides, add subjects and pick up where you left off with your BBC account. We can draw straight lines using a ruler. To position a ruler accurately, place the point that says 0 at the start ...

If you're angling for an affordable family cruise, you'll be happy to know that several major cruise lines let children sail for free (either regularly or during special promotions). Read on to ...