An equation is shown.

2(a+b)=c

solve the equation for b in terms of a and c.

b = c/2 -a

Step-by-step explanation:

Starting with 2(a+b)=c, we want to isolate (solve for) the variable b.

1.  Divide both sides by 2, resulting in a + b = c/2.

2.  Subtract a from both sides:  a - a + b = c/2 - ab, or b = c/2 -a

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.