amberswagg
amberswagg amberswagg
  • 11-04-2018
  • Mathematics
contestada

What are they intercepts of y=2x^2-3x-20 a)x=-5 and 2 b)x=5 and -2 c)x=-2.5 and 4 d)x=2.5 and -4

Respuesta :

altavistard
altavistard altavistard
  • 11-04-2018
x-intercept:  Set y= 0 and find x.  Then 2x^2-3x-20= 0.  You must find the roots; there will be two real, unequal roots.  The x-intercepts will look like (a,0) and (b,0), where a and be are your two real, unequal roots.

y-intercept:  set x=0.  Then 2(0)^2 - 3(0) - 20 = -20.  The y-int. is (0,-20).
Answer Link

Otras preguntas

explain why we must balance all chemical equations
What was the Counter-Reformation? A) A series of actions by the Protestant Church intended to separate the Church and the state B) A series of actions by the Ca
I think it is 15 but I want to see what you guys get and break it down please because sometimes people will say what they got and y'all be saying "yeah it's cor
Given f(x)=3x - 1 and g(x)=-x + 6 find f(-2) + g(5)
Locke’s belief in a person
What is the area of parallelogram ABCD? А B 4 3 2 16 square units 20 square units 24 square units 25 square units 1 -5 -4 -3 -2 -1,D1 2 3 4 5C -2 -3
a 4cm by 6cm rectangle sits inside a circle with a radius of 11 cm what is the shaded region
Given the range {-1, 5, 9), what is the domain for the relation y = x + 3?
Using what you have just learned, select the reasons why American sentiment turned against the war in Vietnam over the course of the 1960s. Check all of the box
Two angles add to 90°. The larger angle is 12° more than five times the measure of the smaller angle. Find the measure of the two angles.