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

-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

The y-intercept of y = f(x) =  is -8.

Solution:

From question, given equation is f(x) =

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

--- eqn 1

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

On simplifying, we get

y = 0-0-8

y = -8

So the y-intercept of f(x) =

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.

your answer is b.

x = 33.9

y = 65.6

step-by-step explanation: