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If f(x)= 6x+7, determine the value of f(-3)

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For this you simplify plug in or substitute-3 wherever you see an x in the equation and then simplify.

f(-3)=6(-3)+7
f(-3)=-18+7
f(-3)= - 11
User Danny King
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To evaluate a function at a specific x value simply means to substitute that particular value in place of every occurrence of the variable x.

So, starting from
f(x) = 6x+7, we have


f(-3) = 6\cdot(-3)+7 = -18+7 = -11

User Sharpneli
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