Systems of Equations

Michigan State University - Diagnostic Exam

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3.12

If 4y = x and x+2y = 6, then the x-coordinate of the solution is?
a) $1- 4$ b) 1 c) 6 d) 4 e) 0

Solution:

It follows that $(4y) + 2y = 6 ⇒ y = 1 ⇒ x = 4(1)$ .

Diagnostic:

See 2.15: Systems of Equations .

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July 15, 2008