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Passes through (4,-2) and m = 0.

Sagot :

Passes through (4,-2) and m = 0.

we know that

the equation of the line in point slope form is equal to

y-y1=m(x-x1)

In this problem we have

m=0

and

(x1,y1)=(4,-2)

substitute

y+2=0(x-4)-------> equation in point slope form

y+2=0

y=-2

Part 2

passes through (-1,-7) and (1,3)

we know that

the equation of the line in point slope form is equal to

y-y1=m(x-x1)

step 1

Find the slope m

m=(3+7)/(1+1)

m=10/2

m=5

step 2

Find the equation of the line

we have

m=5

take the point (-1,-7)

substitute

y+7=5(x+1) -----> equation in point slope form

If you take the point (1,3)

the equation is

y-3=5(x-1)