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3 years ago

Which of the following graphs represents the function f(x) = x2 + x − 6?

Mathematics

2 answers:

densk [106]3 years ago

8 0

Answer:

Last graph (the parabola)

Step-by-step explanation:

Find the x-intercept and it will tell you which graph is correct. Also the fact that its x^2 should tell you its a parabola and there is only one in the answers.

f(x)=x^2+x-6

=(x+3)(x-2)

x=-3,2

x-intercepts: (-3,0), (2,0)

Darya [45]3 years ago

3 0

The answer is: D

Step-by-step explanation:

Direction: Opens Up

Vertex: ( −1/2, −25/4)

Focus: (−1/2, −6)

Axis of Symmetry: x = -12

Directrix: y = -132

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2 years ago

-6-2b=-8. What's the answer

Ksivusya [100]

Answer: B = 1

Step-by-step explanation: The first step is to add 6 to both sides of the equation to get -2b = -2

You then divide both sides by negative 2 so you can get a positive

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2 years ago

Which ordred pair is in the solution set of 4x + 8y>16 ?

ss7ja [257]

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2 years ago

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3 0

3 years ago

PLEASE HELP!!!!! What is the value of x in the matrix equation below?

Brums [2.3K]

The given matrix equation is,

$1.5\left[\begin{array}{cc}x&6\\8&4\end{array}\right] +y\left[\begin{array}{cc}1&4\\3&2\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right]$ .

Multiplying the matrices with the scalars, the given equation becomes,

$\left[\begin{array}{cc}1.5x&9\\12&6\end{array}\right] +\left[\begin{array}{cc}y&4y\\3y&2y\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right] \\$

Adding the matrices,

$\left[\begin{array}{cc}1.5x+y&9+4y\\12+3y&6+2y\end{array}\right] =\left[\begin{array}{cc}z&z\\6z&2\end{array}\right] \\$

Matrix equality gives,

$1.5x+y=z\\ 9+4y=z\\ 12+3y=6z\\ 6+2y=2$

Solving the equations together,

$y=-2\\ 3y-1.5x=9\\ -1.5x=9+6\\ x=-10$

We can see that the equations are not consistent.

There is no solution.

3 0

3 years ago