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Big Ideas Math: Modeling Real Life, Grade 6
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Big Ideas Math: Modeling Real Life, Grade 6 View details
4. Writing Equations in Two Variables
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Exercise 30 Page 270

Substitute (4,28) into the given equation and then simplify.

No

Practice makes perfect
We can determine whether (4,28) is a solution by substituting it into the equation and simplifying using the order of operations.
7=y-5x
SubstituteII

x= 4, y= 28

7? = 28-5( 4)
Multiply

Multiply

7? =28-20
SubTerm

Subtract term

0≠ 8
Since both sides are not equal, (4,28) is not a solution.
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