Question 280831
First, get the equation into slope-intercept form:  y = mx+b
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3x + 5y = 15
5y = -3x + 15
y = -3/5x+ 3
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The y-intercept is where x=0, which equals 3. The point is (0, 3).
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The x-intercept is where y = 0.
0 = -3/5x + 3
x = 5
The point is:  (5,0)
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With two points, you can draw a line.
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{{{graph(500,500,-10,10,-10,10,-3/5*x+3)}}}
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Done