Question

find the nonpermissible replacement for y in the expression
y+9 over y+7

Answer 1

While many of us could solve this problem as stated, I'd still recommend writing the expression properly in symbols as \[\frac{ y+9 }{ y+7 }\]

Answer 2

Which value may y NOT take on?

Answer 3

i dont know can you walk me threw the steps so i can learn and understand

Answer 4

@mathmale

Answer 5

@mathmath333

Answer 6

The main principle to be applied here is "division by zero is undefined."

Thus, your denominator must never take on the value 0.

The denom. is y + 7.

Set this = to 0 (even tho' we know this denom. can't = 0).

Solve for y.

y=?

THAT is the "non-permissible replacement for y."

Answer 7

/so y=7?