SOLUTION: the points (3,y) and (x,-7) are on the line that passes thru (2,1) and has slope 4. find the value of x and y.

Algebra ->  Linear-equations -> SOLUTION: the points (3,y) and (x,-7) are on the line that passes thru (2,1) and has slope 4. find the value of x and y.      Log On


   

Question 691592: the points (3,y) and (x,-7) are on the line that passes thru (2,1) and has slope 4. find the value of x and y.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Use the point-slope formula
+%28+y+-+1+%29+%2F+%28+3+-+2+%29+=+4+
+%28+y+-+1+%29+%2F+1+=+4+
+y+=+5+
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+%28+-7+-+1+%29+%2F+%28+x+-+2+%29+=+4+
+-8+%2F+%28+x+-+2+%29+=+4+
+-8+=+4%2A%28+x+-+2+%29+
+-8+=+4x+-+8+
+4x+=+0+
+x+=+0+