Graphing and graphs problems
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Graphing and graphs problems

[From: ] [author: ] [Date: 13-05-04] [Hit: ]
......
What is an equation of the line that is parallel to y-3x + 5 = 0 and has the same y-intersect as y= -2x+7?

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y - 3x + 5 = 0
y = 3x - 5

Slope = 3

The slope of a parallel line will have the same slope as the original line, so

m = 3


y = - 2x + 7

y-int.(0, 7)


Equation of Parallel Line:

y = 3x + 7
¯¯¯¯¯¯¯¯¯
 

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first of all put your equation on this sample: y=ax+b
first one would be
y-3x+5=0
-3x+5=-y
divide by -1 to remove the - from the y
then you have y=3x-5
and the second one is already y=-2x+7

a parallel equation has the same "a" than the equation it must be parallel to.
an equation that has the same y-intersect has the same "b" as te other one
the equation would be y=3x+7

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Y=3x+7
1
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