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5 votes
Write the equation of a line in point-slope form that is parallel to the line y = 3x +6 and passes through the point (-5, 8).

User Mjandrews
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2 Answers

5 votes
slope = 3
(-5, 8)

y - 8 = 3 (x + 5)
this is point slope form

y - 8 = 3x + 15
y = 3x + 23
User Uberma
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7.3k points
6 votes
A line that is parallel will have the same gradient. So far the equation is y=3x+c. To work out c, you substitute in your coordinate it passes through.

8=(3 times -5)+c
8=-15+c
C= -7

So the answer is y=3x-7. Hope that helps!
User Valentine
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7.1k points