Question

solve graphically 1. y-x=4 and y+x=36

Answer 1

Answer:

x=36-y

36-y-y=4

36-2y=4

-2y=4-36

2y=32

y=32/2

y=16

x=36-16

x=20

Step-by-step explanation:

Answer 2

Step-by-step explanation:

y-x=4-------eq 1

y+X=36----eq 2

+. +.

____________

2x. =40

(X=20)

sub in eq 1

y-x=4

y-20=4

y=4+20

(y=24)