Question

Below are two different functions, f(x) and g(x). What can be determined about their y-intercepts?

f(x) = 4x − 1
x
g(x)
1
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4
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9

Answer 1

f(x) has y-intercept at (0,-1). g(x) is unknown since inputs (x) are missing int he table.

Explanation:

f(x) has the equation y = 4x - 1 which is y = mx + b. This form has the y-intercept directly in the equation as b. So b = -1.

g(x) has no input values in the table. The y -intercept is located where x = 0. Since there are no input values, the y-intercept can not be found without more information.