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tangare [24]
2 years ago
8

Does it matter which coordinate is (x1,y1) and (x2,y2) or can I just choose which coordinate I want it to be?​

Mathematics
2 answers:
olganol [36]2 years ago
7 0

Answer:

No, it doesn't matter which coordinate you assign (x_1,y_1) and (x_2,y_2)

Step-by-step explanation:

<u>Proof</u>

<u />

\textsf{let}\:(x_1,y_1)=(-1,-4)

\textsf{let}\:(x_2,y_2)=(2,2)

\implies \textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{2-(-4)}{2-(-1)}=2

\begin{aligned}y-y_1&=m(x-x_1)\\\implies y-(-4) &=2(x-(-1)\\y&=2x-2\end{aligned}

\textsf{let}\:(x_1,y_1)=(2,2)

\textsf{let}\:(x_2,y_2)=(-1,-4)

\implies \textsf{slope}\:(m)=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{-4-2}{-1-2}=2

\begin{aligned}y-y_1&=m(x-x_1)\\\implies y-2 &=2(x-2)\\y&=2x-2\end{aligned}

zubka84 [21]2 years ago
3 0

Answer:

Technically not on a graph but on a table yes it matter but here if I were you I would do (2,2) and (-1,-4)

Step-by-step explanation:   y=mx+b

(2,2) and (-1,-4)                  2=2(2)+b                     Answer is: y=2x+(-2)

x1 y1         x2 y2                2=4+b

-4-2=-6                           -2=b

-1-2=-3                    y-intercept

m=2

slope                        

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