consider the following equations: -x-y=1 y=x+3 if the two equations are graphed, at what point do the lines representing the two
equations intersect? (-1,2) (-2,1) (1,-2) (2,-1)
1 answer:
Answer:
(-2, 1)
Step-by-step explanation:
consider the following equations: -x-y=1 y=x+3
For the lines to intersect, the values must be the same
-x-y=1
x + y = -1
y = -x - 1
Equating the y values
-x - 1 = x+ 3
-x-x = 3 + 1
-2x = 4
x = 4/-2
x = -2
Substitute x = -2 into y = x+3
y = -2 + 3
y = 1
Hence the required coordinate is (-2, 1)
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