What is the horizontal asymptote of `y = 2x` ?

Related questions

• What kind of functions have horizontal asymptotes?
• How do you find horizontal asymptotes for `f(x) = arctan(x)` ?
• How do you find the horizontal asymptote of a curve?
• How do you find the horizontal asymptote of the graph of `y=(-2x^6+5x+8)/(8x^6+6x+5)` ?
• How do you find the horizontal asymptote of the graph of `y=(-4x^6+6x+3)/(8x^6+9x+3)` ?
• How do you find the horizontal asymptote of the graph of y=3x^6-7x+10/8x^5+9x+10?
• How do you find the horizontal asymptote of the graph of `y=6x^2` ?
• How can i find horizontal asymptote?
• How do you find horizontal asymptotes using limits?
• What are all horizontal asymptotes of the graph `y=(5+2^x)/(1-2^x)` ?