Sign In
Ask Question
Mathematics
Chamberlain
22 May, 12:27
The vertex of this parabola
y=-5x^2-10x-13
+3
Answers (
1
)
Reynaldo Lambert
22 May, 13:47
0
2 ways:
1. hackway
2. convert to vertex form
hack way is
for
y=ax^2+bx+c
the x value of the vertex is - b/2a
plug that value in to get y value
y=-5x^2-10x-13
a=-5
b=-10
xvaluevertex = - (-10) / (2*-5) = 10/-10=-1
xvalue=-1
sub back
y=-5 (-1) ^2-10 (-1) - 13
y=-5 (1) + 10-13
y=-5+10-13
y=-8
xvalue=-1
yvalue=-8
vertex = (-1,-8)
or convert to y=a (x-h) ^2+k where (h, k) is vertex
y=-5 (x^2+2x) - 13
y=-5 (x^2+2x+1-1) - 13
y=-5 ((x+1) ^2-1) - 13
y=-5 (x+1) ^2+5-13
y=-5 (x+1) ^2-8
y=-5 (x - (-1)) ^2 + (-8)
vertex is (-1,-8)
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“The vertex of this parabola y=-5x^2-10x-13 ...”
in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
Y = x + 2 y = 3x - 4
Answers (1)
Find the dimensions of a rectangular prism whose volume is (x^4 - y ^4) units3.
Answers (1)
Which expression is equivalent to - 36 - 8-36-8minus, 36, minus, 8?
Answers (1)
How many angles does a nonagon have?
Answers (1)
A square pyramid has a heighth and a base with side length b. The side lengths of the base increase by 50%. Write a simplified expression that represents the volume of the new pyramid in terms of b and h. An expression is
Answers (1)
New Questions in Mathematics
Apply the law of syllogism to write a new statement based on the following: A → B: If it rains, then football practice will be canceled. B → C: If football practice is canceled, then Patrick will go to the cinema.
Answers (1)
If tan 0 = - 3/8 which expression is equivalent to cot0?
Answers (1)
How many lines of symmetry does the letter R have?
Answers (1)
N//4 = 18/72, what is n
Answers (1)
Given a triangle with angles of 23, 90, 67, what type of triangle is it: acute, equiangular, obtuse, or right?
Answers (2)
Home
»
Mathematics
» The vertex of this parabola y=-5x^2-10x-13
Sign In
Sign Up
Forgot Password?