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3 years ago

Solve the system of equations of equations by graphing on your calculator rounded to 3 decimal spaces

Mathematics

1 answer:

Vanyuwa [196]3 years ago

3 0

Answer:

$x=2.333\\y=-1,667$

Step-by-step explanation:

we have

$y-x=-4$ ----> equation A

$2x+y=3$ ----> equation B

Solve the system of equations by graphing

Remember that the solution of the system is the intersection point both graphs

Using a graphing tool

The intersection point is (2.333,-1.667)

see the attached figure

therefore

The solution is

$x=2.333\\y=-1,667$

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What is the directrix of the parabola defined by `(1)/(4)(y + 3) = (x − 2)^2`?

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The directrix of the parabola is $y = \frac {-49}{16}$

<h3>How to determine the equation of the directrix?</h3>

The parabola equation is given as:

$\frac 14(y + 3) = (x -2)^2$

A parabola is represented as:

$4p(y - k) =(x -h)^2$

By comparing both equations, we have:

4p = 1/4 ==> p = 1/16

-k= 3 ==> k = -3

The directrix is represented as:

y = k - p

So, we have:

$y = -3 - \frac 1{16}$

Take the LCM

$y = \frac {-16 * 3- 1}{16}$

Evaluate

$y = \frac {-49}{16}$

Hence, the directrix of the parabola is $y = \frac {-49}{16}$