Question

i'm solving system of equations and i need help with 2b+a=11 and a-b=5

Answer 1

Ok so we have 2b+a=11
a-b=5

What ways have you learned to solve these?

Answer 2

Elimination, Substitution, or graphing?

Answer 3

So graphing...
Ok!
y=Mx+B
or in this case
we have
b=Ma+B

Answer 4

2b+a=11

We need to solve this for b

Answer 5

Right. 2b=-a+11

Answer 6

So we have b=-a/2+11/2

Answer 7

Do you know what the slope of this equation is?
Do you know what the y-intercept is?

b=Ma+B
M is the slope
B is the y-intercept

Answer 8

\[b=\frac{-1}{2}a+\frac{11}{2}\]

Answer 9

The slope if -1/2
and
y-intercept 11/2

Answer 10

Slope is rise/run

Answer 11

rise is -1 means we are going down 1
And
run is 2 so we go in the positive direction twice