Using a system of equations, it is found that the value of “b” in ax^2 + bx + c would be of:
B. 6
<h3>What is a system of equations?</h3>
A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this problem, when x = 0, y = 15, hence c = 15.
When x = -1, y = 10, hence:
a - b + 15 = 10
a - b = -5
a = b - 5.
Then, when x = 1, y = 22, hence:
a + b + 15 = 22
a + b = 7
b - 5 + b = 7
2b = 12
b = 6.
Hence option b is correct.
More can be learned about a system of equations at brainly.com/question/24342899
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