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Determine whether the two lines are parallel, perpendicular, or neither.

y=3x+9
−9x+3y=12


Sagot :

Answer:

Step-by-step explanation:

y = 3x + 9

3y - 9x = 12                 Add 9x to both sides

3y = 9x + 12                Divide by 3

y = 9/3 x + 12/3

y = 3x + 4

Since the slopes are the same for both equations and since the y intercept of the first one is 9 and the second one is 4 (the y intercepts are different), the lines are parallel.