Which of the following functions has a rate of change that stays the same?

(1 point)
Responses

y equals negative 4 x plus 10
Image with alt text: y equals negative 4 x plus 10

y equals one half x squared
Image with alt text: y equals one half x squared

y equals 3 superscript x baseline
Image with alt text: y equals 3 superscript x baseline

y equals x squared plus 2