Solution and Answer:

Determine whether the ordered pair is a solution of the given equation

1.) (1.2, -3.3); 10x = 20y + 78

If the value of x is 1.2 and y is -3.3. Then, plug and substitute the equation.

• 10x = 20y + 78
• 10(1.2) = 20(-3.3) + 78
• 12 = -66 + 78
• 12 = 12 ✔

∴ Therefore, the ordered pair is a solution set of the given equation.

2.) (5, 10); x + 2y - 25 = 0

If the value of x is 5 and y is 10. Then, plug and substitute the equation.

• x + 2y - 25 = 0
• (5) + 2(10) - 25 = 0
• 5 + 20 - 25 = 0
• 25 - 25 = 0
• 0 = 0 ✔

∴ Therefore, the ordered pair is a solution set of the given equation.

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