Question

Point (k,3) lies on the line whose equation is x-2y=-2. What is the value of k?

a.-8
b.-6
c.6
d.8

Answers

Brianna
its D
Angie
Why is it D?
Brianna
actually, i wrote the problem wrong, its not D

let me check my answer real quick
Brianna
i keep getting 4, so i don't know whats going on

first i changed the equation to slope intercept form and then plugged in the point

and then i realized you can just plug in the point in the form that its in

but either way you get four

because the "k" actually symbolizes the "x"

so when you plug it in you get this


x-2(3)=-2
x-6=-2

then add six to both sides

x=4
Angie
i think you're right..thank you
Brianna
haha were you debating between those four answers or were they given to you

because you had me going there for a second i was like whattt the heck!
Angie
no, i've just decided that there's something wrong with this question.
Brianna
good guess
Reiny
Very simple question
If the point (k,3) lies on the line whose equation is x-2y=-2 then it must satisfy the equation, so
k - 6 = -2
k = -2+6 = 4
Zakayla
The answer is -8

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