Question

Use the image to answer the question.

Two open, downward facing parabolas of different sizes that share a vertex are plotted on a coordinate plane. 1 is a solid line and 1 is a dotted line.

Identify the k-value for the vertical stretch from the original function (the solid parabola) to the dilated function (the dotted parabola).

(1 point)

Answer 1

The k-value for the vertical stretch from the original function to the dilated function can be determined by comparing the distance between the vertex and a point on the parabola for both functions. In this case, since the solid parabola is the original function and the dotted parabola is the dilated function, the k-value for the vertical stretch is greater than 1 as the dotted parabola is stretched vertically compared to the solid parabola.