Examine the two distinct lines defined by the following two equations in slope-intercept form.

line ℓ: y=3/4x+6
line k: y=3/4x−7
are lines ℓ and k parallel? justify your response.

no, lines ℓ and k are not parallel because their slopes are not equal.
no, lines ℓ and k are not parallel because their slopes are proportional.
yes, lines ℓ and k are parallel because their slopes are proportional.
yes, lines ℓ and k are parallel because their slopes are equal.