In[54]:= g1 = -x + 1; g2 = 5 x - 1; g3 = 2 x - 3; Plot[{g1, g3, g2}, {x, -1, 2}, AspectRatio -> 1/2]
In[62]:= Pointt = Solve[{y = g1, y = g2}, {x, y}]
In[62]:= Solve::ivar: -1+5 x is not a valid variable.
Out[62]= Solve[{-1 + 5 x, -1 + 5 x}, {x, -1 + 5 x}]
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