The slope-intercept form: y = mx + b
m - slope
b - y-intercept
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We have m = -2/3, and the point (3, 4).
y = -2/3 x + b
Substitute the coordinates of the point to the equation:
4 = -2/3 (3) + b
4 = -2 + b |+2
6 = b → b = 6
Answer: y = -2/3 x + 6