All categories

3 years ago

. Which function's graph has a vertex at (-1, -3) and contains the point (2, 15)? HELPPP PLEASEE

Mathematics

1 answer:

AlexFokin [52]3 years ago

5 0

Answer:

2(x+1)²-3

Step-by-step explanation:

Using the vertex formula we can write the follwoing equation

y=a(x+1)²-3

We need to solve for a

we know that when x= 2 y = 15

So we can write

15=a(2+1)²-3

15=9a-3

18=9a

a=2

Which means our final equation is

2(x+1)²-3

in standard form (just in case)

2x²+4x-1

You might be interested in

Look at the following graph of the given equation. Determine whether the equation is the function. Explain why or why not.

Drupady [299]

Answer:

Step-by-step explanation:

It is a function. Every x has only 1 y associated with it. You cannot find an exception to this rule.

Stated another more common way: if you take a ruler and lay it flat on the graph so that the ruler is parallel to the y axis, you will find the ruler will go through only one y for every x. That's called the vertical line test.

3 0

3 years ago

Simplify the expression (3-i)-(2+6i)

vredina [299]

Answer:5-5i

Step-by-step explanation:(3-i)-(2+6i) (3+2)-(6i-i) =5-5i

8 0

3 years ago

Will mark correct answer branliest!!!

WITCHER [35]

Answer: A = 4 P = π PS = -π/2

Step-by-step explanation:

y = A sin(Bx - C) + D where

A is the amplitude
Period = 2π/B
Phase Shift = C/B
D is the vertical shift

Given: y = -4 sin(2x + π) - 3

A (amplitude) = 4 the negative sign is a reflection, not amplitude
B = 2
C = -π
D = -3

Amplitude = 4

$\text{Period}=\dfrac{2\pi}{B}\quad =\quad \dfrac{2\pi}{2}\quad =\quad \pi$

$\text{Phase Shift}=\dfrac{C}{B}\quad =\quad \dfrac{-\pi}{2}\quad =\quad -\dfrac{\pi}{2}$

4 0

3 years ago

IF CORRECT ILLL BIVE U BRAINLIEST NEED FAST PLS

Montano1993 [528]

Answer: The first one -4x-3<13

Step-by-step explanation: because they didn't really tell us what happened to the 3 just that the 3 disappeared and the 13 became 16

5 0

1 year ago

A French class has a total of 31 students. The number of males is 7 more than the number of females. How many males and how many

Inessa05 [86]

Answer:

Step-by-step explanation:

5 0

3 years ago