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Solve each system by the substitution method. If there is no solution or an infinite number of solution, so state. Use set notation to express solution sets.

Solve each system by the substitution method If there is no solution or an infinite number of solution so state Use set notation to express solution sets class=

Respuesta :

Answer:

(b) x = 43/5, y = -1/5

Explanation:

(b)

x = 2y + 9 ......................................(1)

x = 7y + 10 .....................................(2)

From these equations, we can write

2y + 9 = 7y + 10

7y - 2y = 9 - 10

5y = -1

y = -1/5

Using y = -1/5 in (1)

x = 2(-1/5) + 9

= 9 - 2/5

= 43/5

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