Solve the System by Substitution $$\begin{array} { r } x + 8 y = 35 \\2 x + 8 y = 30\end{array}$$

question 199

Multiple Choice

Solve the system by substitution.
- $$\begin{array} { r } x + 8 y = 35 \\2 x + 8 y = 30\end{array}$$

• A) \(\{ ( 5,4 ) \}\)
• B) \(\{ ( - 4 , - 5 ) \}\)
• C) \(\{ ( - 5,5 ) \}\)
• D) \(\varnothing\)

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Definitions:

Zone Of Proximal Development

A concept developed by psychologist Lev Vygotsky, referring to the difference between what a learner can do without help and what they can achieve with guidance and encouragement from a skilled partner.

Pretend Play

A form of play in which children use their imagination to recreate and act out roles, scenarios, and activities.

Mental Acts

The operations of the mind involving thinking, reasoning, perceiving, or judging.

Mutual Exclusivity Assumption

A cognitive bias in language learning where children assume that objects have only one label or name, facilitating the acquisition of new vocabulary.