y-intercept is (0,0)
Explanation:
Domain is termed as all the values of x where a solution may be reached at.
Range is termed as the solution set for the x-values (domain).
y = 2x
So x = y/2
If x = 0 then y = 2(0) = 0
So y intercept is (0,0).
The domain is all real numbers, written as (-∞,∞)
The range of a domain that contains all real numbers is, all real numbers (-∞,∞)