L. z and 2z have equal cardinality becausef: z 2z defined byf(n)-2n is a bijection: fis one-to-one because if f(a)-f(b), then 2a -2b which gives that a-b. fis onto because if 2ke 22, then k e z and/(k)-2k

y=4x+2

Step-by-step explanation:

The equation of a line is where m is the slope and b is the y intercept,

We know that the equation of this line has a slope of 4, then:

Now the equation of the line passes through the point (1,6). We have to replace this point in

x=1 and y=6,

Then the equation of the line is:

y=4x+2

The correct answer is the third option.