Answer:
Linear equations that go in a straight line.
They are linear so they don’t curve like parabolas.
Step-by-step explanation:
See this picture. It will definitely help you!
2x(-7)^2-9 = 2x49-9=98-9=89 maybe
Answer:

Step-by-step explanation:
<u>Use identities to set the equation up as a quadratic</u>

<u>Make the substitution u=cos(x) and solve the quadratic</u>
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Hence, 
Answer:
daw
Step-by-step explanation:
Answer:
Step-by-step explanation:
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