First, let's simplify the expression: 7 - 5 + 3x - 1 ⇒ 3x + 1 (slope=3, y-intercept = 1)
Next, let's understand what they are asking for:
no solutions means same slope but different y-intercepts
Answer: 3x + _______ (the blank can be anything except 1)
one solution means different slopes
Answer: ________x + _______ (the first blank can be anything except 3, the second blank can be anything)
infinitely many solutions means same slope and same y-intercept
Answer: 3x + 1
