What type of method do we use?

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Presentation transcript:

What type of method do we use?

Warm-Up 2 Solve each system using Elimination: 1. 2.

Use GRAPHING when: both equations are in the form y=

Use SUBSTITUTION when: both equations are x= Both equations are y = and you do not have a calculator Or one equation is either x= or y=

Use ELIMINATION when: both equations are in standard form Ax + By = C.  Must have opposites (or create opposites by multiplication) in order to add the equations

Determine which method to use 1. 2. 3.

Try a word problem! At an ice cream parlor, ice cream cost $1.10 and sundaes cost $2.35. One day, the receipts for a total of 172 cones and sundaes were $294.20. How many cones were sold?

Complete worksheet! HW: 7.11!