You deposit $300 in a savings account the account earns 2% simple interest per year. What is the interest earned after 10 years?
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Answer:
c = - 2
Step-by-step explanation:
calculate the slope m using the gradient formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (8, 0) and (x₂, y₂ ) = (- 8, c)
m = =
=
cross- multiplying gives
8c = - 16 ( divide both sides by 2 )
c = - 2