Question

00000000
3) y = 5x - 2
x + 4y = 8
Explain:​

Answer 1

`[(16)/(21), 1(17)/(21)]`

Explanation:

{y = 5x - 2

{x + 4y = 8

Use the Substitution Method:

x + 4[5x - 2] = 8

x + 20x - 8 = 8

21x - 8 = 8

+ 8 + 8

__________

21x = 16

____ __

21 21

x = 16⁄21 [Plug this back into both equations above to get the y-coordinate of 1 17⁄21]; 1 17⁄21 = y

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