Question 284138
When you know two points, use the slope-intercept form:  y = mx+b
m = rise / run = change in y / change in x
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m = (4-3) / (0-3) = 1/-3 = -(1/3)
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y = -1/3x+b
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Now substitute one of the point's values to find b.
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4 = -(1/3)(0) + b
b = 4
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Check using the second point.
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3 = -1/3(3) + b = -1 + b
b = 4
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Therefore,
y = -1/3x + 4
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Graph it for another check.
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{{{graph(500,500,-10,10,-10,10,-1/3*x+4)}}}
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