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irinina [24]
3 years ago
10

Which graph represent the solution to the given systems y=-x +4 y=1/3x + 8

Mathematics
2 answers:
Furkat [3]3 years ago
8 0
Use substitution

-x + 4 = 1/3x + 8
4 = 4/3x + 8
-4 = 4/3x
x = -4 * 3/4
x = -3

Then plug x into one of the original equations. In this case y = -x + 4 is the easiest.

y = -(-3) + 4
y = 7
Semmy [17]3 years ago
4 0

The solution of the given systems y =  - x + 4{\text{ and }}y = \dfrac{1}{3}x + 8 is \boxed{\left( { - 3,7} \right)}. Option (a) is correct.

Further explanation:

Given:

The system of equations is y =  - x + 4{\text{ and }}y = \dfrac{1}{3}x + 8.

The options are as follows,

(a). \left( { - 3,7} \right)

(b). \left( {0,8} \right)

(c). \left( { 3,7} \right)

(d). \left( {0,4} \right)

Explanation:

The given system of equations is y =  - x + 4{\text{ and }}y = \dfrac{1}{3}x + 8.

Equate the two equations to obtain the solution of the system of equation.

\begin{aligned}- x + 4 &= \frac{1}{3}x + 8\\- x - \frac{1}{3}x & 8 - 4\\\frac{{ - 3x - x}}{3} &= 4\\- 4x &= 12\\x&= - 3\\\end{aligned}

The value of y can be obtained as follows,

\begin{aligned}y &= - \left( { - 3} \right) + 4\\&= 3 + 4\\&= 7\\\end{aligned}

The solution of the given systems y =  - x + 4{\text{ and }}y = \dfrac{1}{3}x + 8 is \boxed{\left( { - 3,7} \right)}. Option (a) is correct.

Learn more:

  1. Learn more about inverse of the functionhttps://brainly.com/question/1632445.
  2. Learn more about equation of circle brainly.com/question/1506955.
  3. Learn more about range and domain of the function brainly.com/question/3412497

Answer details:

Grade: High School

Subject: Mathematics

Chapter: Linear equation

Keywords: system of equations, numbers,slope, slope intercept, equation, y-intercept, graph, representation, origin.

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