2X + 5Y = 20
5Y = - 2X + 20
Y = (- 2/5)X + 4
================now, reading off the function,
Y intercept = 4
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Is the equation of a straight line with slope 2 and an intercept of (0,20).
Slope= -2/5 y-intercept is 20 x-intercept is 50
If as a straight line equation: 5x+2y = 20 then y = -2.5x+10 whereas -2.5 is the slope and 10 is the y intercept
y = -2x+10
x-intercept | -10 y-intercept | 4 slope | 2/5 = 0.4