BECE Mathematics 2020 Paper

Plotting inequalities on number linesInequalities can be represented on a number line.Use a hollow dot for:< and >Use a solid dot for:$\leq$ and $\geq$Example ExampleThis shows $x$ is greater than or equal to : -1Number line showing $x$ is greater than or equal to -1$x \geq -1$ExampleThis shows $x$ is less than : 2Number line showing $x$ is less than 2$x < 2$ExampleThis shows that $x$ is greater than or equal to -1 and $x$ is less than 3 :Number line showing that $x$ is greater than or equal to-1, and less than 3 $x \geq -1$ and $x < 3$Which can be written as $-1 \leq x < 3$, which reads -1 is less than or equal to $x$ and $x$ is less than 3 Notice that we can change the order of the first part and it still means the same thing. $x \geq -1$ means as $-1 \leq x$