Identify any two equations that form a system with one solution (different slopes)

? I Hint: Make sure all equations are in Y=mx + b format first. J
1. y = 57 -4
2. y = -2x + 3
3. y = 3x +1
4. 2y = 6x + 2
5. у - 5х = 2
6. у -4х +1 = 0

1 answer

To identify two equations that form a system with one solution (meaning the lines intersect at exactly one point), we need to ensure they have different slopes.

First, let's rewrite all equations in the format y=mx+b:

  1. y=574 simplifies to y=53. (This is a horizontal line with slope = 0.)
  2. y=2x+3 is already in the correct form. (Slope = -2.)
  3. y=3x+1 is already in the correct form. (Slope = 3.)
  4. Starting from 2y=6x+2, divide by 2: y=3x+1 (This has a slope of 3).
  5. From y5x=2, we rearrange to get y=5x+2 (Slope = 5).
  6. From y4x+1=0, rearranging gives y=4x1 (Slope = 4).

Now we have the slopes for each equation:

  1. y=53 (slope = 0)
  2. y=2x+3 (slope = -2)
  3. y=3x+1 (slope = 3)
  4. y=3x+1 (slope = 3)
  5. y=5x+2 (slope = 5)
  6. y=4x1 (slope = 4)

For the system to have one solution, we need pairs of equations with different slopes.

Let's select:

  • Equation 2: y=2x+3 (slope = -2)
  • Equation 5: y=5x+2 (slope = 5)

These two equations have different slopes and will intersect at exactly one point, thus forming a system with one solution.

So, the two equations are:

  1. y=2x+3
  2. y=5x+2