If a line crosses the y-axis at (0, -3) and has a slope of 3, what is the equation of the line?

asked Feb 12, 2017 76.6k views

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4 votes

General equation of the line is
y = mx + b
m = 3
so y=3x+b

now find b
-3=3(0)+b
-3=b

so the equation is
y = 3x - 3

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6 votes

General equation of the line is
y = mx + c

c = -3
m = 3

so the equation is
y = 3x - 3

Seb Barre answered Feb 16, 2017

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