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Find the equations of each line and show all of your work.

1. (1, 5) (2, 6)
2. (1, 1) (3, -8)
3. (2, -3) (5, -2)
4. (2, 5) (4, 3)
5. (-3, -5) (-1, -3)

Respuesta :

Batanouny

Answer:

To know the equation of line we need 2 things

slope and y intercept

slope= (y2-y1)÷(x2-x1)

y intercept is y when x =0

then put them in formula f(x)=mx+c

m = slope, c= y intercept

1: slope = 1. y intercept = 4

f(x)=x+4

2: slope = -9/2. y intercept = 11/2

f(x)= -9/2x+(11/2)

3: slope = 1/3. y intercept = -11/3

f(x)=x/3+(-11/3)

4: slope = -1. y intercept = 7

f(x)=-x+7

5: slope = 1. y intercept = -2

f(x)=x+-2

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