2 A quadratic function has an x2 term in it and is graphed a

2. A quadratic function has an \"x2\" term in it and is graphed as a parabola. It is generally written as f(x)=ax2+bx+c, where “a” cannot be zero. What is the significance of \"c\" to the graph?

Solution

f(x) = ax^2 + bx + c

when x =0, we get

f(0) = a*0^2 + b*0 + c

f(0) = c

So we get the value of function \'c\', when x = 0, which means it gives us y-intercept.