y in t erce pt f or x = 0 2 x + y = 4 ∣ s u b t r a c t 2 x y = 4 − 2 x y = 4 − 0 y = 4 y in t erce pt i s e q u a l t o 4.
If x = 0
2 x 0 + y = 4 y = 4
Answer = 4
The y-intercept of the line described by the equation 2 x + y = 4 is y = 4 . This means the line crosses the y-axis at the point (0, 4).
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