# SOLUTION: what is the y intercept from the following example. triangle RST has a scale factor of 1/2 and coordinates of the following r( 0, 2) s(6, -4) T( -4,-12) i keep getting -22/5 and th

Algebra ->  Algebra  -> Coordinate-system -> SOLUTION: what is the y intercept from the following example. triangle RST has a scale factor of 1/2 and coordinates of the following r( 0, 2) s(6, -4) T( -4,-12) i keep getting -22/5 and th      Log On

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 Question 251288: what is the y intercept from the following example. triangle RST has a scale factor of 1/2 and coordinates of the following r( 0, 2) s(6, -4) T( -4,-12) i keep getting -22/5 and the real answer is -17/5 with a slope of 4/5. the slope is no problem but how are they getting -17/5 ????Found 2 solutions by drk, MRperkins:Answer by drk(1908)   (Show Source): You can put this solution on YOUR website!We know that R(0,2), S(6,-4), and T (-4,-12). Applying a scale factor of 1/2, we get R'(0,1), S'(3,-2), and T'(-2,-6). The slope of ST = slope of S'T' = 4/5. The Y-intercept of S'T' = -22/5. The Y-intercept of ST = -44/5. I don't see anything wrong with your answer. Is it possible that the "real" answer or book answer is incorrect? Answer by MRperkins(300)   (Show Source): You can put this solution on YOUR website!I have worked this problem as well and I, too, get the y-intercept of -22/5. I just wanted to reinforce this.