X + 7y = 0, 2x-8y = 22?

Sagot:

# (x, y) hanggang (7, -1) #

Paliwanag:

# x + 7y = 0to (1) #

# 2x-8y = 22to (2) #

# "mula sa equation" (1) tox = -7yto (3) #

# "kapalit" x = -7y "sa equation" (2) #

# 2 (-7y) -8y = 22 #

# -22y = 22 #

# "hatiin ang magkabilang panig ng" -22 #

# y = 22 / (- 22) = - 1 #

# "kapalit" y = -1 "sa equation" (3) #

# x = -7 (-1) = 7 #

# "punto ng intersection" = (7, -1) #

graph {(y + 1 / 7x) (y-1 / 4x + 11/4) ((x-7) ^ 2 + (y + 1) ^ 2-0.04) = 0 -10, 10, 5}