Mathematics for IGCSE & O level - Inequalities (Section 2 - No. 31)

Which number line correctly represents the solution to the inequality x < 4?

A number line with a closed circle at 4, and shading to the right.

A number line with an open circle at 4, and shading to the right.

A number line with a closed circle at 4, and shading to the left.

A number line with an open circle at 4, and shading to the left.

x<4 means all numbers less than 4, which is represented by an open circle at 4 and shading to the left.