Posted by Gayle on Saturday, November 9, 2013 at 1:21pm.
Describe the effect of the transformation.
(x,y)>(x,7y)
A. Vertical translation of 7 units.
B. Vertical stretch without reflection
C. Horizontal translation of 7 units
D. Vertical stretch without reflection
Is the answer A

Algebra 1  Gayle, Saturday, November 9, 2013 at 1:22pm
D.Vertical stretch with reflection
It was supposed to say this

Algebra 1  Reiny, Saturday, November 9, 2013 at 2:42pm
y>7y would "stretch" it by a factor of 7
y  7y would not only stretch it but also reflect it in the xaxis.
so it looks like D after your correction of the wording
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