Answer:
Step-by-step explanation:
Filling the given information into the equation gives two equations in two unknowns:
- 11 = m(-2) +b
- -9 = m(3) +b
Subtracting the first equation from the second, we have ...
(-9) -(11) = (3m +b) -(-2m +b)
-20 = 5m . . . . . . simplify
-4 = m . . . . . . . . divide by the coefficient of m
Putting this value of m into the first equation above, we have ...
11 = -2(-4) +b
3 = b . . . . . . . . . subtract 8
The values of m and b are -4 and 3, respectively.
