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2x+y=1
Solve for y.2x+y=5*subtract 2x from both sides*2x+y-2x=5-2xy=-2x+5 / y=5-2x
-3
If: y = 2x then y² = 4x² If: x² + y² - 8x - y + 5 = 0 then x² + 4x² - 8x - 2x + 5 = 0 → 5x² - 10x + 5 = 0 → x² - 2x + 1 = 0 → (x - 1)² = 0 → x = 1 → y = 2x = 2 × 1 = 2 → point of contact is at (1, 2)
X = 0 (zero) Y = -1 (neg 1)