Question

Selesaikan dengan metode grafik, metode substitusi, dan metode eliminasi substitusi

a. 2x + 3y = 5
4x - y = 3

b. 2x + 10y = 14
5x - 9y = 1

Answer 1

Verified answer

Metode grafik
utk x = 0
2x+3y = 5
3y=5
y=5/3
tipot {0 , 5/3}

utk y=0
2x+3y=5
2x=5
x=5/2
tipot {5/2 , 0}


utk x = 0
4x-y = 3
-y=3
y=-3
tipot {0 , -3}

utk y=0
4x-y=3
4x=3
x=3/4
tipot {3/4 , 0}

gambarkan grafik sesuai tipot tersebut

metode eliminasi
2x + 3y = 5      x2    4x + 6y = 10
4x - y = 3          x1    4x -    y = 3  -
                                       7y = 7
                                         y =1

sub ke pers 2x + 3y = 5
2x +3(1) = 5
2x = 5-3
2x= 2
x = 1

hp {1,1}