SOLUTION: Graph the equation using the x- and y- intercepts. x/4 - y/7 = 1

Algebra ->  Graphs -> SOLUTION: Graph the equation using the x- and y- intercepts. x/4 - y/7 = 1      Log On


   

Question 782618: Graph the equation using the x- and y- intercepts.
x/4 - y/7 = 1
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+x%2F4+-+y%2F7+=+1+
Multiply both sides by +28+
+7x+-+4y+=+28+
The y-intercept is at ( 0,y )
The x-intercept is at ( x,0 )
-----------------------------
y-intercept:
+7%2A0+-+4y+=+28+
+-4y+=+28+
+y+=+-7+
--------------
x-intercept:
+7x+-+4%2A0+=+28+
+7x+=+28+
+x+=+4+
-------------
The y-intercept is at ( 0,-7 )
The x-intercept is at ( 4,0 )
here's the plot:
+graph%28+400%2C+400%2C+-10%2C+10%2C+-10%2C+10%2C+%287%2F4%29%2Ax+-+7+%29+