Graph the quadratic y=x^2+3x+8

. What is the x-intercept(s)?(1 point)
Responses

There is no x-intercept.
There is no x -intercept.

(−1.5,5.75)
left parenthesis negative 1.5 comma 5.75 right parenthesis

−1.5
negative 1.5

(0,8)

1 answer

To find the x-intercepts of the quadratic equation \( y = x^2 + 3x + 8 \), we need to set \( y = 0 \) and solve for \( x \):

\[ x^2 + 3x + 8 = 0 \]

We can use the quadratic formula, given by:

\[ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \]

Here, \( a = 1 \), \( b = 3 \), and \( c = 8 \).

  1. Calculate the discriminant (\( b^2 - 4ac \)): \[ b^2 - 4ac = 3^2 - 4(1)(8) = 9 - 32 = -23 \]

Since the discriminant is negative (\( -23 < 0 \)), this means there are no real x-intercepts for this quadratic function.

Thus, the correct response is:

There is no x-intercept.