A waterfall is n times the height of its picture on a postcard. Which equation represents the height, y, of the waterfall if the picture is 7cm tall

Answer 1

Given that the height of the waterfall is \( n \) times the height of its picture on a postcard, we can represent the height of the waterfall \( y \) using the equation:

\[ y = n \times h \]

where \( h \) is the height of the picture. Since the height of the picture is given as 7 cm, we can substitute that value into the equation:

\[ y = n \times 7 \]

So, the equation that represents the height \( y \) of the waterfall is:

\[ y = 7n \]