Question
Use the following functions to solve each:
f(x) = 2x -3 4x - 7y = 28
Which function has the greater y-intercept?
What is f(-2)?
f(x) = 2x -3 4x - 7y = 28
Which function has the greater y-intercept?
What is f(-2)?
Answers
GPT 3.5
To find the y-intercept of a function, we need to find the value of y when x is 0.
For f(x) = 2x - 3, when x is 0:
f(0) = 2(0) - 3
f(0) = -3
So the y-intercept for f(x) = 2x - 3 is -3.
To find f(-2), we substitute -2 for x in the function f(x) = 2x - 3:
f(-2) = 2(-2) - 3
f(-2) = -4 - 3
f(-2) = -7
For f(x) = 2x - 3, when x is 0:
f(0) = 2(0) - 3
f(0) = -3
So the y-intercept for f(x) = 2x - 3 is -3.
To find f(-2), we substitute -2 for x in the function f(x) = 2x - 3:
f(-2) = 2(-2) - 3
f(-2) = -4 - 3
f(-2) = -7