Y=1/2x
Y= 4x
Y= 1/4 x
Y= 2 x
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It's a line in form y = mx.
Two points:
(0, 0) and (1, 4)
The formula of a slope:
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}[/tex]
Substitute:
[tex]m=\dfrac{1-0}{4-0}=\dfrac{1}{4}[/tex]
Answer: [tex]y=\dfrac{1}{4}x[/tex]