PLZ

A student is trying to solve the system of two equations given below:

Equation P: y + z = 6
Equation Q: 5y + 9z = 1

Which of the following is a possible step used in eliminating the y-term?

(y + z = 6) ⋅ 9
(y + z = 6) ⋅ −5
(5y + 9z = 1) ⋅ 9
(5y + 9z = 1) ⋅ 5

Question

PLZ

A student is trying to solve the system of two equations given below:

Equation P: y + z = 6
Equation Q: 5y + 9z = 1

Which of the following is a possible step used in eliminating the y-term?

 (y + z = 6) ⋅ 9
 (y + z = 6) ⋅ −5
 (5y + 9z = 1) ⋅ 9
 (5y + 9z = 1) ⋅ 5

anonymous · Answer

@Hero @KieraV @freegirl11112 @IrishBoy123 @phi

anonymous · Answer

@Destinyyyy @shadow13 @pizza4dayz @whpalmer4 @otismeister

mrnood · Answer

I think you have typed your answers incorrectly - they do not make sense like that

destinyyyy · Answer

What do you think it is?

anonymous · Answer

i didn't type them @MrNood

destinyyyy · Answer

You would need to do a negative number to do elimination

anonymous · Answer

to eliminate y, you have to multiply by a non zero number so that your new y, if added to the y in the other equation, the result will be zero. so in this case, only -5y + 5y will eliminate y. so  the answer is B.

destinyyyy · Answer

The last two are incorrect so that leaves you with the top two. Which one is correct?

anonymous · Answer

thank u @KieraV

anonymous · Answer

No problem! :)