Question

What is the solution to the system of equations?

y = 1.5x – 4

y = –x

Answer 1

I could definitely be wrong, but from what I just did, I got -3.5.
I added 4 to both sides and then subtracted 1.5 from both sides which left me with this...
3.5y = x and b/c y=-x then I changed the final answer to -3.5

I could be wrong, but I tried. Wish ya luck!

Answer 2

@ratlady16

Answer 3

so because there is y=-x using this the first equation will be
-x=1,5x -4
4=1,5x +x
4=2,5x

x = 4/2,5 = 1,6

x=1,6

but you know from second equation that y=-x so this mean that y = - 1,6

hope you understand it

Answer 4

Make the two equation in the form of x+y=c. Let c be the whole number. Equating the given equation.

1.5x-y=4
x+y=0

Then, using the subtraction and addition of linear equation. This will give you
1.5x=4
x=0

add the two
2.5x=4

(2.5x)/2.5=4/2.5

x= 1.6

Take 1.5x-y=4
-y=4-1.5x
substitue x

-y=4-1.5(1.6)
-y=4-2.4
-y=1.6
divide both side by -1

y=1.6

the solution set are

(1.6,1.6)

Hope you understand :)