Answer:
y=-3x+7
Step-by-step explanation:
Parallel means the lines have the same slope.
So they practically give you the slope as -3
Now we can use the form of an equation of a line
Y=mx+b
now we have m- the slope we just need to plug in the coordinate values given- (2,1)
Y=-3x+b
1=(-3·2)+b
1=-6+b
b=7
now we add to our original equation
we know m= -3
we know b=7
that's all we need
substitute
y=mx+b
becomes
y=-3x+7
Hope this helps
~lalagrl
