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Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

Cumulative Practice

Exercise 2 Page 421

Substitute - 3 for x in the equation.

I

To evaluate the given equation for x=- 3, we should substitute - 3 for x in the given equation and then simplify.

y=5-2x

x= - 3

y=5-2( - 3)

MultNegNegOnePar

- a(- b)=a* b

y=5+6

Add terms

y=11

Because y is 11, the correct option is I.

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