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Question 1072011: Find the equation of the line with m = 3 and passing through point (3, 0).
a) y = 3x – 9
b) y = 3x – 3
c) y = 3x + 9
d) y = 3x + 3
Answer by math_helper(2461)   (Show Source):
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Find the equation of the line with m = 3 and passing through point (3, 0).
a) y = 3x – 9
b) y = 3x – 3
c) y = 3x + 9
d) y = 3x + 3
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To solve, compare y = mx+b (m=slope, b=y-intercept) to see which of the choices work. They all have m=3 so then the next question is which one passes through (3,0)?
a) y = 3(3) - 9 = 0 —> this equation, y=3x-9, satisfies both conditions: slope=3 and that the line passes through (3,0).
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So (a) is the answer.
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