1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svet-max [94.6K]
3 years ago
11

I need another graphing quadratic pointer f(x)=x square -18x +80

Mathematics
1 answer:
swat323 years ago
4 0
F(x)=x^2-18x+80
ok so remember
you need to know
1. degree of function- tells what kind of graph
2. leading term- tells which direction graph opens
3. xintercept and y intercepts
4. vertex

ok so in form
f(x)=ax^2+bx+c 

1.
degree, 2nd degree so parabola

2.
a=leading terma=+1 in this case so the graph opens up and is a normal graph

3.xintercept is where graph crosses x axis or where y=0, y=f(x) so
0=x^2-18x+80
0=(x-8)(x-10)
xints are (8,0) and (10,0)
y intercept is where cross y axis or where x=0
set x=0
yint=0^2-18(0)+80
yint=80
yint=(0,80)

4. vertex (vertex is highest point if graph opens down, and lowest point if graph opens up)
if in form f(x)=ax^2+bx+c, the x value of the vertex is given by -b/(2a) so
b=-18
a=1
-(-18)/2(1)
18/2=9
input
9^2-18(9)+80=yvalue
-1=yvalue
vertex=(9,-1)

so we have
1. graph is parabola
2. opens up
3. crosses through points (8,0), (10,0), (0,80)
4. vertex=(9,-1)

so we plot the points (8,0), (10,0), (0,80) and (9,-1)  and draw a prabola opening up with (9,-1) as the highest point
attachment below ( it might be hard to graph (0,80) since it is so high up so you don't have to graph that point)


You might be interested in
To make 112112 dozen muffins, a recipe uses 312312 cups of flour. How many cups of flour are needed for every dozen muffins made
Mamont248 [21]
312/112= 2.79 cups of flour per dozen
4 0
2 years ago
The original price of a blender is $18.00. If the blender is discounted 25%, what is the new price?
Ivanshal [37]

Answer:

$4.50

Step-by-step explanation:

Please give brainliest!!

6 0
3 years ago
What is 6 1/5 - 3 3/4 =
k0ka [10]
the division of the quarter is 6x
3 0
2 years ago
Read 2 more answers
Find the equation of the line with slope = 2 and y-intercept = -8.​
elena-s [515]

Answer: d

Step-by-step explanation:

Using the linear equation y=mx+b, you are given m (the slope) and b (the y-intercept). m=2 and b=-8. Therefore, y=2x-8

6 0
3 years ago
Subtract. Write your answer in simplest form.<br> 5/- 10/5
tigry1 [53]

Answer:

-1/10

Step-by-step explanation:

(5/(-10))/5 = -(5/10)/5 = 1/10

(Hopefully this helped you out!)

7 0
2 years ago
Other questions:
  • Joy is planning to purchase a sweater that costs $30 dollars at her local department store. The sweaters are on sale for 20% off
    9·1 answer
  • tanya, will, and juan are playing a gane. juan scores 101473 points. tanya scores 9,879 fewer points than juan.will scores 9853
    13·1 answer
  • A particle moves with velocity function v(t) = 2t^2 - 3t - 3, with v measured in feet per second and t measured in seconds. Find
    13·1 answer
  • What are the factors of 36 and 90?
    15·1 answer
  • Are these expressions equivalent 2w + 1t and 2w+ t
    7·1 answer
  • The scores of quizzes from 10 students is sampled. The scores, out of 20, are 12, 14, 14, 9, 17, 16, 18, 10, 8, 16. What is the
    12·1 answer
  • Help PLSSSSSSSSSSSSSSSSS extra points
    14·1 answer
  • 44/35 as a mixed number
    15·2 answers
  • Find the missing segment in the image below
    6·2 answers
  • NEED ASAP WILL GIVE ANYTHING
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!