Mathematics: Y=2x-3 -- how do you graph this

We need to solve,We can write the above mentioned expression as,So,So,Hence,Taking common in respective terms,On cancelling 4 with 2,Taking (-) common,So, (√5 - √7) gets cut,Hence,...

Y=2x-3 -- how do you graph this - id231097197, florenciaaxell4042

Ответ:

tieragroff

09.07.2020

Mathematics

y = 2x - 3

To plot a graph

you need at least one coordinate and slope

2 coordinates

y = 2x -3

By Comparing with General Equation of a line that is y = mx + c

Here m represents slope

and c is y intercept

which inturn results in m = 2 , c = -3

c = -3

So Coordinate is (0,-3)

Plot (0,-3)

Take a line having slope 2

Then you can plot it

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Ответ:

kaylam8346

24.07.2020

Mathematics

$\large\underline{\sf{Solution-}}$

We need to solve,

$\dfrac{\sqrt{112}-\sqrt{80}}{\sqrt{20}-\sqrt{28}}$

We can write the above mentioned expression as,

$\sf\longmapsto\dfrac{\sqrt{2\times2\times2\times2\times7}-\sqrt{2\times2\times2\times5}}{\sqrt{2\times2\times5}-\sqrt{2\times2\times7}}$

So,

$\sf\longmapsto\dfrac{\sqrt{4\times4\times7}-\sqrt{4\times4\times5}}{\sqrt{2^2\times5}-\sqrt{2^2\times7}}$

So,

$\sf\longmapsto\dfrac{\sqrt{4^2\times7}-\sqrt{4^2\times5}}{\sqrt{2^2\times5}-\sqrt{2^2\times7}}$

Hence,

$\sf\longmapsto\dfrac{4\sqrt{7}-4\sqrt{5}}{2\sqrt{5}-2\sqrt{7}}$

Taking common in respective terms,

$\sf\longmapsto\dfrac{4(\sqrt{7}-\sqrt{5})}{2(\sqrt{5}-\sqrt{7})}$

On cancelling 4 with 2,

$\sf\longmapsto\dfrac{4\!\!\!/^{\:2}(\sqrt{7}-\sqrt{5})}{2\!\!\!/(\sqrt{5}-\sqrt{7})}$

$\sf\longmapsto\dfrac{2(\sqrt{7}-\sqrt{5})}{(\sqrt{5}-\sqrt{7})}$

Taking (-) common,

$\sf\longmapsto\dfrac{-2(\sqrt{5}-\sqrt{7})}{(\sqrt{5}-\sqrt{7})}$

So, (√5 - √7) gets cut,

Hence,

$\longmapsto\bf\dfrac{\sqrt{112}-\sqrt{80}}{\sqrt{20}-\sqrt{28}}=-2$

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Y=2x-3
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how do you graph this

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