How do you find slope? Example: y=7x-4
1 answer:
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F(x) = x^2 +2*7x + 40
.. = (x^2 +2*7x +7^2) +(40 -7^2)
.. = (x +7)^2 -9
f(x) = (x +7)² -9
.. = (x^2 +2*7x +7^2) +(40 -7^2)
.. = (x +7)^2 -9
f(x) = (x +7)² -9