Solving Systems of Equations

In Equal Values Method, both equations have to be in y= format.

• True

• False

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Ms. Abrajan was trying to solve this system of equations with the Equal Values Method. In what step did she go wrong?

• step 5

• step 2

• step 4

• step 1

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve using Substitution Method:

y - x = 2

y = 4x + 23

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

If I am using Substitution Method, what is the first thing I need to do to solve this system of equations?

y + 22 = 3x

15 + y = 2x

• Solve for x

• Put both equations in y= format

• Solve for y

• Put one equation in y= format

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Solve using Equal Values Method:

-x + y = 9

y = 4x + 24

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Did Ms. Abrajan make a mistake in solving this system of equations?

• Yes, Step 2 is wrong

• No, this is correct Equal Values Method

• Yes, Step 5 is wrong

• No, this is correct Substitution Method

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

Which method do you think is easier?

• Equal Values Method

• Substitution Method

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6