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

תשובה:

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

הסבר:

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

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

# "מ משוואה" (1) tox = -7 yto (3) # #

# "תחליף" x = -7y "במשוואה" (2) #

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

# -22y = 22 #

# "הפרד בין שני הצדדים" -22 #

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

# "תחליף" y = -1 "במשוואה" (3) # #

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

# "נקודת הצומת" = (7, -1) #

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