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3 votes
-3x+9y=-54 what is the y intercepts

2 Answers

6 votes
Simple...

you have: -3x+9y=-54

If you want to find the yi-intercept of this line you must first re-write it in y=mx+b form-->>

-3x+9y=-54

-3x+9y=-54
+3x +3x

9y=3x-54

Now divide by 9...


(9y)/(9) = (3x-54)/(9)

y=
(1)/(3) x-6

As we can see the y-intercept is located at (0,-6).

Thus, your answer.

User Aborted
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One way to find the y int is to sub in 0 for x and solve for y

-3x + 9y = -54
-3(0) + 9y = -54
9y = -54
y = -54/9
y = -6....so ur y int is -6 or (0,-6)
User Ergec
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7.1k points