Answer: -4 and 9
Step-by-step explanation:
You can solve with the formula for cuadratic equations:
x=−b±√b2−4ac
2a
Answer:
15
Step-by-step explanation:
The general equation of a line is y = mx + b
m is given as 1/2, so we have:

Plugging in the given values of x and y, we get:
-2 = 0 + b
Therefore b = -2, and the answer is: