SOLUTION: What is the y-intercept of 3x-y=7? Please help me with this problem! Thanks.

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Question 109361This question is from textbook algebra2 with trigonometry
: What is the y-intercept of 3x-y=7? Please help me with this problem! Thanks. This question is from textbook algebra2 with trigonometry

Found 2 solutions by scott8148, jim_thompson5910:
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
rearranging to the slope-intercept form (y=mx+b) shows the intercept

adding y gives 3x=y+7 ... subtracting 7 gives 3x-7=y

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
To find the y-intercept, let x=0 and solve for y:
3%2A%280%29-1%2Ay=7 Plug in x=0

1%2Ay=7 Simplify

x=7%2F-1 Divide both sides by -1



y=-7 Reduce



So the y-intercept is (note: the y-intercept will always have a x-coordinate equal to zero)