If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Algebra 1

Course: Algebra 1 > Unit 8

Lesson 2: Inputs and outputs of a function
Math
Algebra 1
Functions
Inputs and outputs of a function
© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

Function inputs & outputs: graph

Google Classroom

Problem

What is the input value other than 0 for which f, left parenthesis, x, right parenthesis, equals, minus, 2?
x, equals
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
A coordinate plane. The x- and y-axes both scale by one. There is a graphed function, y equals f of x, which is made up of line segments. A line segment connects negative ten, negative six to negative eight, negative four. A line segment connects negative eight, negative four to negative seven, negative six. A line segment connects negative seven, negative six to negative three, negative two. A line segment connects negative three, negative two to negative two, negative four. A line segment connects negative two, negative four to zero, negative two. A line segment connects zero, negative two to one, zero. A line segment connects one, zero to two, two. A line segment connects two, two to four, four. A line segment connects four, four to nine, negative one. A line segment connects nine, negative one to ten, negative one.
Stuck?
Stuck?