Respuesta :

cactussky
b., because it indicates that what the x-coordinate is is multiplied by 6. for example, in the case that x was 1, y would be 6, opposed to y being 3 as in option a.
In a function like this, determine the slope by looking at the constant of variation. 

y = kx
K is the constant

y = 6x has a steeper slope.