Answer:
x-intercepts = -4 and 2
vertex (-1, -9)
Step-by-step explanation:
To find the x-intercepts ie roots
set the equation to 0
(x - 2) (x + 4) = 0
From the zero product rule
x - 2 = 0
x = 2
x + 4 = 0
x = -4
x-intercepts = -4 and 2
--------------------------
The x coordinate of the vertex is the midpoint of the roots
x = (-4 + 2)/2
x = -1
Plug x = -1 into the function
y = (-1 - 2)(-1 + 4)
y = -3 * 3
y = -9
vertex (-1, -9)
Answer:
B
Step-by-step explanation:
need the length and height of the triangle on the left
Draw straight lines down your graph and if the line passes two lines on the graph then it’s not a function but if the line you draw a line and it only hits one line on the graph and doesn’t cross another then it’s a function. A and b are not functions because they fail the vertical line test c however passes the vertical line test meaning it’s a function
your average mean score would be <u>C. 85</u>
Answer:
Step-by-step explanation:
<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em>