Do you have a graph for your question?
Remember the shortcut way for graphing quadratic equations
- A quadratic function has graph as parabola
- Hence on both sides of vertex the parabola is symmetric and axis of symmetry is vertex x values .
- y on both sides for -x and +x is same
#1
Vertex
As a is positive parabola facing upwards
Find y for same x distance from vertex
I took 3-1=2 and 3+1=4
- f(2)=2(2-3)²-1=2(-1)²-1=2-1=1
- f(4)=2(4-3)²-1=1
Now plot vertex and these two points (2,1) and (4,1) on graph then draw a parabola by freehand
#2
- y=(x-2)(x+4)
- y=x²+4x-2x-8
- y=x²+2x-8
Convert to vertex form
Vertex at (-1,-9)
Same take two equidistant x values
Let's take -1-1=-2 and -1+1 =0
- f(-2)=(-2+1)²-9=1-9=-8
- f(0)=(1)²-9=-8
Put (-1,-9),(-2,-8),(0,-8) on graph and draw a freehand parabola
#3.
Yes it can be verified by finding the coordinate theoretically on putting them on function then can be verified through putting them on graph whether they matches or not
Answer:
i think its the first graph
Step-by-step explanation:
sry if this isn't right i wish i
could help
Debnil have 2 tablespoons to salt.
Step-by-step explanation:
Given,
Number of teaspoons of salt = 6
Ratio of teaspoons to tablespoons = 3:1
Let,
x be the number of tablespoon of salt for 6 teaspoons.
Ratio of teaspoons to tablespoons = 6:x
Using proportion
Ratio of teaspoons to tablespoons :: Ratio of teaspoons to tablespoons
Product of mean = Product of extreme
Dividing both sides by 3
Debnil have 2 tablespoons to salt.
Keywords: ratio, proportion
Learn more about proportion at:
#LearnwithBrainly
Probability of an event happening is given by:
probability of an event happening=number of ways it can happen/total number of outcomes
number of random selection=40
total number of patients who did not leave against medical advice=52,560
thus the probability that at random selection none of the 40 patients left the treatment center against medical advice will be:
40/52560
=0.00076
