Answered

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can you please help me with the (-4,-7) and (8,-13).

Can You Please Help Me With The 47 And 813 class=

Sagot :

(-4,-7) and (8,-13)

Slope intercepts equation:

y=mx+b

Where:

m= slope

b= y intercept

Apply the slope formula:

[tex]m=\frac{y2-y1}{x2-x1}[/tex]

Where:

(x1,y1)=(-4,-7)

(x2,y2)=(8,-13)

Replacing:

[tex]m=\frac{-13-(-7)}{8-(-4)}=\frac{-13+7}{8+4}=\frac{-6}{12}=-\frac{1}{2}[/tex]

So far we have:

y=-1/2x+b

Replace x,y by a given point, for example (8,-13) and solve for b

-13= -1/2(8) + b

-13=-4 +b

-13+4=b

b= -9

Final equation:

y= -1/2x -9

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