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Katena32 [7]
3 years ago
10

Does anyone get this ? if so can u lmk the answer thxxxx:)

Mathematics
2 answers:
MrRissso [65]3 years ago
8 0

Answer:

a)   y = \frac{3}{4} x + 3

The equation of the straight line CD is    y = \frac{3}{4} x + 3

Step-by-step explanation:

<u><em>Step(i):-</em></u>

Given points are A (-4,0) and B( 0,3)

Slope of the line

   m = \frac{y_{2} - y_{1} }{x_{2} - x_{1} } = \frac{3-0}{0-(-4)} = \frac{3}{4}

Slope of the line     m = \frac{3}{4}

<u><em>Step(ii):-</em></u>

The equation of the straight line passing through the point ( -4,0) and having slope    m = \frac{3}{4}

y - y₁ = m(x-x₁)

y -0 = \frac{3}{4} ( x- (-4))

y = \frac{3}{4} x + 3

The equation of the straight line AB is    y = \frac{3}{4} x + 3

<u><em> Step(iii):-</em></u>

CD is parallel to the line AB

The equation of the straight line AB is    y = \frac{3}{4} x + 3

                                     4 y = 3 x + 12

                                    3x - 4y +12 =0

The equation of the Parallel line is   3 x -4y +k=0

Passes through the point ( 0,3)

                                 -12 +k=0

                                      k =12

The equation of the Parallel line is   3 x -4y +12=0

                                                       4 y = 3 x+12

The equation of the straight line CD is    y = \frac{3}{4} x + 3

IgorLugansk [536]3 years ago
7 0

Given:

In parallelogram ABCD, two of its vertices are A(-4,0) and B(0,3).

To find:

The equation that represents a line that contain CD.

Solution:

We have,

A(-4,0) and B(0,3)

Slope of AB is

m=\dfrac{y_2-y_1}{x_2-x_1}

m=\dfrac{3-0}{0-(-4)}

m=\dfrac{3}{4}

The slope of line AB is \dfrac{3}{4}.

Opposite sides of a parallelogram are parallel and slopes of parallel lines are equal.

In parallelogram ABCD, AB and CD are opposite sides. So, their slopes must be equal.

Slope of line AB = Slope of line CD = \dfrac{3}{4}

The slope intercept form of a line is

y=mx+b

Where, m is slope and b is y-intercept.

Slope of line CD is \dfrac{3}{4}, it means the line must be of the form

y=\dfrac{3}{4}x+b

Coefficient of x is \dfrac{3}{4} only in option a.

Therefore, the correct option is a.

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