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What do parallel lines have in common?
y=2/3x
Consider the given equation of a line.
y=2/3x+1
When lines are parallel, they have the same slope. Because of this, we know that all lines that are parallel to the line whose equation is given will have a slope of 23.
We can write a general equation in slope-intercept form for these lines.
x= 0, y= 0
Zero Property of Multiplication
Add terms
Rearrange equation
Now that we have the y-intercept, we can write the parallel line to y= 23x+1 through (0,0). y=2/3x+ 0 ⇔ y = 2/3x