Question

Can someone please Help me?

Answer 1

9514 1404 393

Answer:

  see below

Step-by-step explanation:

It is easiest to compare the equations when they are written in the same form.

The first set can be written in slope-intercept form.

  y = 2x +7

  y = 2x +7 . . . . add 2x

These equations are identical, so have infinitely many solutions.

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The second set can be written in standard form.

  y +4x = -5

  y +4x = -10

These equations differ only in their constant, so have no solutions.

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The third set is already written in slope-intercept form. The equations have different slopes, so have exactly one solution.