Mathematics for IGCSE & O level - Graphs Of Functions (Section 1 - No. 4)

How do you find the roots of the function y = x² - 4x + 3?

Set y = 0 and solve for x.

Set x = 0 and solve for y.

Find the vertex of the parabola.

Determine the y-intercept.

The roots (x-intercepts) are found when y = 0