y = 2x – 3 y = -x + 3 solve for x and y

Question

y = 2x – 3
y = -x + 3 solve for x and y

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Helga 4 years 2021-08-27T06:36:02+00:00 1 Answers 18 views 0

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  1. Edana
    0
    2021-08-27T06:37:17+00:00
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    We are given the system of equations:

    \large{ \begin{cases} y = 2x - 3 \\ y = - x + 3 \end{cases}}

    Since both are y-isolated equation, we can combine them together.

    \large{2x - 3 = - x + 3}

    Isolate and solve for x-term.

    \large{2x - 3 + 3 + x = - x + 3 + x + 3} \\ \large{2x + x = 6 \longrightarrow 3x = 6} \\ \large{ \frac{3x}{3} = \frac{6}{3} \longrightarrow \boxed{ \red{x = 2}}}

    Next, we find the value of y. Simply substitute x = 2 in one of these equations. The less coefficient values, the faster and better. I will substitute x = 2 in y = -x+3. You can substitute x = 2 in y = 2x-3 if you want but the result would be the same.

    \large{y = - x + 3}

    Substitute x = 2 in the equation.

    \large{y = - 2 + 3} \\ \large \boxed{ \blue{y = 1}}

    Therefore – when x = 2, y = 1. We can write in coordinate point or ordered pair as (2,1) from (x,y).

    Answer

    • x = 2, y = 1
    • (2,1) — ordered pair

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