Illustrative Example: Determine whether each function is a linear or not.
1. y = x + 5
2. y = x2 – 2x + 1
3. x + y = -2
4. y = x2
5. y = 3(x-7)
6. y = 2x2 + 5
7. y = (x - 2)(x + 3)
8.5y = 10x + 15
9. y = 7 – x2
10. y = + 5
1. y = x + 5
2. y = x2 – 2x + 1
3. x + y = -2
4. y = x2
5. y = 3(x-7)
6. y = 2x2 + 5
7. y = (x - 2)(x + 3)
8.5y = 10x + 15
9. y = 7 – x2
10. y = + 5
Answers & Comments
Answer:
1. Yes
2. Not
3. Yes
4. Not
5. Yes
6. Not
7. Not
8. Yes
9. Not
10. Yes
Step-by-step explanation:
The easiest way to know if an equation is linear is to see it's variable's exponent. The X's exponent should be 1 or simply an x, it already stands for 1.
An exponent of 2 is quadratic function while an exponent of 3 is called trinomial function.
-JDCD