Question

Qual a equação da reta representado no gráfico?

Answer 1

$y = ax + b\\\\A(-4, 0)\\B(0, 4)\\\\De \ B, \ temos:\\\\4 = a \cdot 0 + b\\b = 4\\\\Aplicando \ em \ A:\\\\-4a + b = 0\\-4a + 4 = 0\\-4a = -4\\a = \frac{4}{4}\\a = 1\\\\Portanto, \ a \ equa\c{}c\~ao \ \'e:\\\\\boxed{y = x + 4}$