Idon't understand this problem. i would love it if someone could explain this to me! you!

The answer is D it stretches the graph by a factor of 4. this is due to multiply by 1/4 when plugging in an x value. ie:

1/4(1)^2= 1/4
1/4(2)^2 = 1

now y=x^2

(1)^2=1
(2)^2=4 

so the y value goes up faster which makes a steeper slope aka less wide
when y=x^2 

If y=1/4x^2 then the y values go up less than just x^2 by factor of 1/4 making the slope less steep and opening off parabola to be wider.

try graphing y=x^2 and y=1/4x^2 on your graphing calculator and see the difference I am talking about,

Hope this helps. Any questions please ask! Thank you!

Match the stem and leaf plot to the correct set of data.

The set of data that can be created from the given stem and leaf plot using the key 1 | 6 means 1.6 is:

1.5, 1.5, 1.6, 2.1, 2.1, 2.1, 3.5, 3.6

From the given options, the option C) is correct.

Hence, the option C) 1.5, 1.5, 1.6, 2.1, 2.1, 2.1, 3.5, 3.6 is the correct data set for the given stem and leaf plot