SOLUTION: write an equation of the line that is parallel to the to the graph of y-3x=4 and has the same y-intercept as the graph of 4y+x=36

Algebra ->  Linear-equations -> SOLUTION: write an equation of the line that is parallel to the to the graph of y-3x=4 and has the same y-intercept as the graph of 4y+x=36       Log On


   



Question 400687: write an equation of the line that is parallel to the to the graph of y-3x=4 and has the same y-intercept as the graph of 4y+x=36

Found 2 solutions by Alan3354, sofiyac:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
write an equation of the line that is parallel to the to the graph of y-3x=4 and has the same y-intercept as the graph of 4y+x=36
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y-3x=4 --> the slope is 3
4y+x=36 --> the y-intercept is 9
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y = 3x + 9

Answer by sofiyac(983) About Me  (Show Source):
You can put this solution on YOUR website!
Write an equation of the line that is parallel to the to the graph of y-3x=4 and has the same y-intercept as the graph of 4y+x=36
First we'll find the slope of the first equation, since lines are parallel our slope will be the same. So if you add 3x to each side you get
y-3x+3x=3x+4
y=3x+4 which means our slope is m=3
Next we need to find the y intercept of the second equation. So we solve it for y by subtracting x from each side and then dividing each side by 4.
4y+x-x=-x+4
4y=-x+4
4y%2F4=-x%2F4%2B4%2F4
y=-x%2F4%2B1 so now you plug in x=0 in order to find y intercept of that equaiton
y=-0%2F4%2B1
y=0%2B1
y=1 so the intercept is b=1
so now we have y intercept and a slope so we can use the slope intercept form and plug in what we know
y=mx+b where m is the slope and b is the y intercept
y=3x+1