184k views
13 votes
Without building the graph find the coordinates of the point of intersection of the lines given by the equations y=3x-1 and 3x+y=-7

hellp

User Sugarcane
by
3.2k points

1 Answer

5 votes

Answer:(-1,-4)

Step-by-step explanation: We can solve this as a pair of linear equations.

y=3x-1

y=-7-3x

3x-1=-7-3x

6x=-7+1

6x=-6x

x=-1

From first equation, y=3(-1)-1

y=-4

User Isaaclw
by
3.5k points