SOLUTION: 2x - 7y = -21 What is the y-intercept of the equation above?

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Question 793220: 2x - 7y = -21 What is the y-intercept of the equation above?
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

y-intercept


To find the y-intercept, plug in x=0 and solve for y


2x+-+7y+=+-21 Start with the given equation.


2%280%29+-+7y+=+-21 Plug in x=0.


0+-+7y+=+-21 Multiply 2 and 0 to get 0.


+-+7y+=+-21 Simplify.


y=%28-21%29%2F%28-7%29 Divide both sides by -7 to isolate y.


y=3 Reduce.


So the y-intercept is .