Question

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

Answer 1

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

Slope intercepts equation:

y=mx+b

Where:

m= slope

b= y intercept

Apply the slope formula:

`m=(y2-y1)/(x2-x1)`

Where:

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

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

Replacing:

`m=(-13-(-7))/(8-(-4))=(-13+7)/(8+4)=(-6)/(12)=-(1)/(2)`

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