SOLUTION: Using the given equation find the missing coordinates of the points and then find the slope of the line for each equation y=−3/7x+3; A(...; 6), B(9; ...) i found the slo

Algebra ->  Linear-equations -> SOLUTION: Using the given equation find the missing coordinates of the points and then find the slope of the line for each equation y=−3/7x+3; A(...; 6), B(9; ...) i found the slo      Log On


   

Question 1080786: Using the given equation find the missing coordinates of the points and then find the slope of the line for each equation
y=−3/7x+3; A(...; 6), B(9; ...)
i found the slope which was -3/7
Answer by MathTherapy(10556) About Me  (Show Source):
You can put this solution on YOUR website!
Using the given equation find the missing coordinates of the points and then find the slope of the line for each equation
y=−3/7x+3; A(...; 6), B(9; ...)
i found the slope which was -3/7
The slope is right there for you to see, but you don't need it.



Let missing x and y-coordinates be matrix%281%2C5%2C+x%5B1%5D%2C+and%2C+y%5B2%5D%2C+%22%2C%22%2C+respectively%29

6+=+-+%283%2F7%29x+%2B+3 ------- Substituting 6 for y in equation

%283%2F7%29x+=+3+-+6

3x%2F7+=+-+3

3x = - 21 ------- Cross-multiplying

matrix%281%2C3%2C+x%5B1%5D+=+-+21%2F3%2C+or%2C+-+7%29.

We then have:   

Do the same thing to get the other missing coordinate, (y%5B2%5D).