Question

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

Equation P: y + z = 4
Equation Q: 3y + 7z = 15

Which of the following steps can be used to eliminate the y term? (4 points)


–3(y + z = 4)
3(y + z = 4)
–1(3y + 7z = 15)
–3(3y + 7z = 15)

Answer 1

Do you know how to solve by elimination?

Answer 2

to eliminate y, you have to make the top equations y equal negative three. to do that, you need to multiply the entire equation by negative three. which one shows a multiplication of -3 on this equation: (y + z = 4)

Answer 3

TO ELIMINATE Y, YOU NEED THE TWO EQUATIONS IN THEIR FIRST TERM TO EQUAL IN ZERO

Answer 4

HOW MANY Y'S DO YOU NEED TO TURN 3Y INTO ZERO

Answer 5

try first option.