Question

(08.03)Solve the system of equations and choose the correct answer from the list of options.

x − y = 7
y = 3x + 12

2 over 19 comma 2 over 33
negative 2 over 19 comma negative 33 over 2
negative 19 over 2 comma negative 33 over 2
19 over 2 comma 33 over 2

Answer 1

someone help please

Answer 2

There are two equations
We call first equation as eq#1
and 2nd equation as eq#2
x-y=7.................eq#1
y=3x+12 .............eq#2
now what you have to do
Just plug y's value of eq#2 into equation 1 at the place of y
you will get this one
x-3x-12 =7
-2x = 19
x= -19/2
now put x= -19/2 into eq#1
and get the value of y
-19/2 -y=7
y=-19/2 -7
y=-19-14/2
y=-33/2
so your (x,y)= (-19/2, -33/2)

Answer 3

so, C is correct answer

Answer 4

Haseeb96 is correct