# intercepts

how do i dp this??
for the equation 5x-3y=-30 i have 2 find x and y intercepts
5x-3y=-30 so let x be 0
0-3y=-30 and how do u do the last step for x and y??

 ebaines Posts: 10,055, Reputation: 5539 Expert #2 Jun 14, 2012, 06:41 AM
Quote:
 Originally Posted by qwertyuioop how do i dp this?? for the equation 5x-3y=-30 i have 2 find x and y intercepts 5x-3y=-30 so let x be 0 0-3y=-30 and how do u do the last step for x and y??
You have:
0 - 3y = -30

You're almost there - just solve for y. Start by adding '3y' to both sides:

0-3y+3y = -30 +3y
0 = -30 +3y

0 + 30 = -30 + 3y + 30
30 = 3y

Divide both sides by 3:

30/3 = 3y/3
10 = y

That's the y-intercept. Do the same process to find the x-intercept by setting y=0 in that original equation and solve for x.
 qwertyuioop Posts: 87, Reputation: 1 Junior Member #3 Jun 14, 2012, 06:44 AM
Awsome thnx i get it now!!!

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