Question

A line with a slope of -3 passes through the points (-5,1) and (-3,u). What is the value of u?

u=
Help!

Answer 1

u = -5
That is the answer

Answer 2

Good morning,

Answer:

u=-5

Explanation:

the line D:y=-3x+b

A(-5,1)∈D ⇔ 1= -3(-5)+b ⇔ b= -14

then D:y=-3x-14

B(-3,u)∈D ⇔ u=-3(-3)-14 ⇔ u=-5

look at the photo below for more info.

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