Answer:
m = -1/6.
b = 5.
Step-by-step explanation:
Slope m = (3 - 6) / (12 - -6)
= -3 / 18
= -1/6.
y = -1/6 x + b
when x = 12 y = 3 so
3 = -1/6 * 12 + b
b = 3 + 2 = 5.
Answer:
21<em>a</em> − 8
Step-by-step explanation:
This system has exactly one solution, because the two equation are linearly independent (i.e. one is not a multiple of the other).
We can explicitly find the solutions: from the first equation we deduce

Plug this value for x in the second equation:

Multiply both sides by 6 to get

Plug this value for y in the expression for x:

Since both a,b are not zero, both solutions are well defined.