5.1
Linear Functions
Is it a linear function?
x
y
1
-5
2
-3
3
-1
4
1
5
3
x
y
5
1
4
4
3
9
2
16
1
25
You can tell if a function is linear by looking at its equation.
If you can write the equation in standard form,
then the function is linear.
The standard form for a linear equation is
Ax + By = C
Where A, B, and C are real numbers.
Is it a linear function?
If so, write the equation in standard form and
give the values of A, B, and C.
3x - 2y = -9
6x2 - y = 8
|x| +3 = y
x+
6
y
y =
1x
2
= 12
- 43
7xy + 2 = -18
5y = -10
Tell whether it's linear. If so, graph the function.
y = x+3
y = 6
x
y = 2
9x - 3y = 6