Question

This again I’ll figure it out but I need a bit of help

Answer 1

(x, y) → (6, 3)

Explanation:

y = 5x - 27 ....... (1)

y = 2x - 9 ......... (2)

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Substitute the first equation into the second equation

y = 2x - 9

<=> 5x - 27 = 2x - 9

<=> 5x - 2x = 27 - 9

<=> 3x = 18

<=> x = 18 ÷ 3

<=> x = 6

Substitute x = 6 into the second equation

y = 2x - 9

y = 2(6) - 9

y = 12 - 9

y = 3

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Answer 2

Hi,

Explanation:

`\left\{\begin{array}{ccc}y&=&5x-27\\y&=&2x-9\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}y&=&5x-27\\5x-27&=&2x-9\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}y&=&5x-27\\3x&=&-9+27\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}y&=&5x-27\\x&=&(18)/(3)\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}x&=&6\\y&=&5*6-27\\\end{array} \right.\\\\\\\left\{\begin{array}{ccc}x&=&6\\y&=&3\\\end{array} \right.\\`

(6,3) is the answer