Question

x intercepts

Answer 1

whats the question your asking

Answer 2

identify the x-intercepts in the graph y = 3x2 + 19x – 40..sorry connection was slow

Answer 3

The Def'n of the x-intercept is the points where the y-value is zero. So set y to 0 and solve for x

Answer 4

use the quadratic formula

Answer 5

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

Answer 6

Quadratic formula for 0 = ax^2 + bx + c\[x= {-b \pm \sqrt{b^2-4ac} \over 2a}\]

Answer 7

thank you guys.. but how do I do that?

Answer 8

are you studying algebra 1 or 2?

Answer 9

2

Answer 10

just sub into formula and use order of operation to evaluate it