WILL FAN AND MEDAL 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? (1 point)

Question

WILL FAN AND MEDAL 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? (1 point)

anonymous · Answer

Options?

cryleeb · Answer

a. (y + z = 6) ⋅9
b. (y + z = 6) ⋅–5
c. (5y + 9z = 1) ⋅9
d. (5y + 9z = 1) ⋅5

cryleeb · Answer

@Zelda, do you think you can help me with this? (:

anonymous · Answer

Well, if you wanted to cancel out the y terms, they'd have to add up to zero, right?

So which option would make the top equation have -5y?

cryleeb · Answer

B?