find the equation of a line if it has the same y intercept as 3x-7y+21=0 snd is parallel to the x axix

Question

find the equation of a line if  it has the same y intercept as 3x-7y+21=0 snd is parallel to the x axix

waheguru · Answer

i got 7= 24/7

waheguru · Answer

i got y = 24/7

s3a · Answer

y = 0x - 21/3? I did it in my head so I could be wrong.

anonymous · Answer

y  =3

waheguru · Answer

http://openstudy.com/#/updates/4ec94b02e4b095539996fe90

s3a · Answer

Isn't it only the y-intercept that it takes from the given equation?

And the slope from the line y = 0x?

aroub · Answer

sorry! misread the question :(

anonymous · Answer

Aroubt did you know about the form of straight line $$ \frac x a +\frac yb =1 $$

anonymous · Answer

s3a's approach is a shortcut but not good for a beginner IMO

s3a · Answer

And the answer should be y = 0x +21/3 (not negative)

s3a · Answer

Basically, waheguru, the number in front of the x is the slope and the number that is alone is the y-intercept of a function. This question is asking to find another function that has the same number without the x near it and the same number in front of the x as the equation y = 0x. Why y = 0x because that's the equation of the x-axis.