Question

$y = \frac{2}{3} x + \frac{1}{2}$

Answer 1

A raiz é quando o y é igual a zero, ou seja:

$y = \frac23x + \frac12 \\\\ 0 = \frac23x + \frac12 \\\\ -\frac23x = \frac12 \\\\ x = \frac{\frac12}{-\frac23} \\ \\ x =- \frac12 \cdot \frac32 \\\\ x = - \frac34$