Big Ideas Math: Modeling Real Life, Grade 8
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Big Ideas Math: Modeling Real Life, Grade 8 View details
2. Representations of Functions
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Exercise 4 Page 282

Substitute 5 for x in the equation.

- 8

Practice makes perfect
To evaluate the given equation for x= 5, we should substitute 5 for x in the given equation and then simplify.
y=7-3x
y=7-3( 5)
y=7-15
y=- 8