OJOAFOLABEE95
Answered

the y-coordinate of the point of intersection of the graph of -x + 4y = -50 and x + y = 20 is​

Sagot :

SINIKMANDENGUE

Réponse:

Hi

Explications:

[tex] - x + 4y = - 50 \\ x + y = 20 \\ - x + 4y + x + y = - 50 + 20 \\ - x + x + 4y + y = - 30 \\ 5y = - 30 \\ y = \frac{ - 30}{5} \\ y = - 6 \\ x + y = 20 \\ x = 20 - y = 20 - ( - 6) \\ = 20 + 6 = 26 \\ x = 26 \\ (x \: y) = (26 \: \: - 6)[/tex]