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What is the equation of the line that passes through the point (−1,−3) and has a slope of 3?

1 Answer

5 votes

Answer:

y= 3x

Explanation:

The slope is just read. It is 3. It is the value of m in the general equation.

y = mx + b

y = 3x + b

To find b, use (-1,-3)

x = -1

y = -3 Substitute into the general equation

-3 = 3(-1) + b Simplify the right side

-3 = -3 + b Subtract -3 from both sides

b = 0

Answer: y = 3x

User Bruno Casali
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