1) Patricia wants to solve the system using linear combination by eliminating the x-terms first.
Equation 1: 2x-9y=-8
Equation 2: 5x + y = -20
la) What does she need to multiply Equation 1 and Equation 2 by to make the x- terms eliminate and what will the
new equations look like? Complete the table below to answer the question (do not solve). 4 points
New Equation 1:
Equation 1:
Equation 2:
5x+y=-20
5x+0=-20
5x=-20
2x-9y=-8
Answer: 4
5x + y = -20
Multiply Equation 1
by
to make
1b) Use the equations you made in 1a) and solve for y using combination,
and then solve for x by substituting into either of your original equations. Show your work! 4 points
x-terms eliminate
Multiply Equation 2
by
to make
x-terms eliminate
New Equation 2:
