Which is the graph of f(x) = (2)-x ?
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In order to do this we need to make them both fractions, or both decimals. It's much easier to make them both decimals, as you can get 
into decimal form by simply dividing 1 by 5.
If 1/5 = .20, then 1/5 is greater than .15!
If 1/5 = .20, then 1/5 is greater than .15!
slope m = - 2 → B
calculate m using the ' gradient formula '
m = (y₂ - y₁)/(x₂ - x₁)
choosing 2 'clear ' coordinates from the graph of the line
(x₁, y₁) = (0, 7) and (x₂, y₂) = (7, - 5) =
= - 2
m =