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2 November, 17:38

Y=2 (3) ²

y=2/3x - 4

solve this system of equations

+2
Answers (1)
  1. 2 November, 17:47
    0
    (33,-260)

    Step-by-step explanation:

    y=2 (3) ² ... equation (1)

    y=2/3x - 4 ... equation (2)

    put equation (1) to equation (2)

    2 (3) ² = 2/3x - 4

    2 (9) = 2/3x - 4

    18 = 2/3x - 4

    add 4 to both sides

    18+4 = 2/3 x - 4 + 4

    22 = 2/3x

    multiply via by 3

    22*3 = 2/3x * 3

    66 = 2x

    divide both sides by 2

    66/2 = 2x/2

    33 = x

    x=33

    solve for y

    to solve for y, put x in equation (2)

    y=2/3x - 4

    y = 2/3 (33) - 4

    y = 2/66 - 4

    find the LCM of 66 and 1

    the LCM is 66

    multiply by their LCM

    y = (2/66) 66-4*66

    y = 2 - 264

    y = - 260

    solution = (33,-260)
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