Do the equations x = 4y + 1 and x = 4y – 1 have the same solution? How might you explain your answer to someone who has not learned algebra?



2 Answers | Add Yours

embizze's profile pic

Posted on (Answer #1)

The equations x=4y+1 and x=4y-1 have no solutions in common.

Graphically, these are parallel lines and thus have no common points.

Numerically, it is clear that for any given y, 4y+1>4y-1 so the associated x-values cannot be the same.

paduncan's profile pic

Posted on (Answer #2)

4y is equal to 4y so if you add one to that number it cannot be equal to the number minus 1.

We’ve answered 288,475 questions. We can answer yours, too.

Ask a question