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Quadratic Polynomials

y-intercepts

The point on the graph cut by the y-axis (that is, x = 0) is called the y-intercept.


Example 2.

To find the y-intercept, enter x = 0 into the function of the quadratic polynomial

Compute the y-intercepts of y = x2 + x +

The y - intercept is (0, ).

In general, for the parabola given by y = ax2 + bx+ c, the y-intercept is (0, c).


Exercise 2.

Now try a few on your own.

Compute the y-intercepts of y = x2 + x +

 

The y - intercept is ( , )

 

 

<< Graphs | Quadratic Polynomials Index | x-intercepts of Quadratics >>

 

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