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Equations & Systems

Level 14 - build-up

2-var Cramer - find y (signed)

6 visual blocks - in-place Cramer

1

Read the shape

Level 14 visual plan for 2-var Cramer - find y (signed)
Identify whether this is linear or a system. 2-var Cramer - find y (signed).

Identify whether this is linear or a system. 2-var Cramer - find y (signed).

2

Pick the method

Equations & Systems: block 2 Visual guide level shape 2-var Cramer - find y (signed)Pick the methodLinear isolates x; systems use determinant ratios. image-first, then practice
Linear isolates x; systems use determinant ratios.

Linear isolates x; systems use determinant ratios.

3

First move

Equations & Systems: block 3 Visual guide level shape 2-var Cramer - find y (signed)First moveCompute D before the variable window. image-first, then practice
Compute D before the variable window.

Compute D before the variable window.

4

Check

Equations & Systems: block 4 Visual guide level shape 2-var Cramer - find y (signed)CheckSubstitute the answer back. image-first, then practice
Substitute the answer back.

Substitute the answer back.

5

Play the mode

Equations & Systems: block 5 Visual guide level shape 2-var Cramer - find y (signed)Play the modeUse the quickest safe method. image-first, then practice
Use the quickest safe method.

Use the quickest safe method.

6

Watch-out

Equations & Systems: block 6 Visual guide level shape 2-var Cramer - find y (signed)Watch-outKeep columns in place; only signs move. image-first, then practice
Keep columns in place; only signs move.

Keep columns in place; only signs move.

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