Question

Write the equation of the line that passes through the points (1,−9) and (3,−17).

Answer 1

Explanation:

Point slope form y-y₁ = m(x-x₁)

-9 - (-17) = m(1 - 3)

8 = m(-2)

-4 = m

y= -4x + b

-9 = -4(1) + b

b = -5

y = -4x - 5