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Arlecino [84]
4 years ago
7

Find the y-intercept of f(x)=3x^2 -2x-8

Mathematics
2 answers:
zavuch27 [327]4 years ago
7 0

<u>Answer: </u>

The y-intercept of y = f(x) = 3x^2-2x-8  is -8.

<u> Solution: </u>

From question, given equation is f(x) = 3 x^{2}-2 x-8

We have to find the y-intercept of the above equation

The y-intercept of the graph is the point where the function crosses the y-axis.  The x-value is equal to zero for every point on the y-axis.

From question given that

y=f(x)=3 x^{2}-2 x-8 --- eqn 1

On substituting x = 0 in equation (1), the above equation becomes

y=3(0)^{2}-2(0)-8

On simplifying, we get

y = 0-0-8

y = -8

So the y-intercept of f(x) = 3 x^{2}-2 x-8 \text { is }-8

Lady_Fox [76]4 years ago
5 0

Answer:

-8

Step-by-step explanation:

y-intercept of f(x)=3x^2 -2x-8  when : x =0

f(0) = 3(0)² -2(0) -8 = - 8

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