A line has a slope of −5 and contains the point (−2, 4).

Which equations represent the line?

Choose all answers that are correct.

A.
−5x + y = −6

B.
5x + y = −6

C.
(y – 4) = −5(x + 2)

D.
(y + 4) = −5(x − 2)

Question

A line has a slope of −5 and contains the point (−2, 4).
 
Which equations represent the line?
 
Choose all answers that are correct.
 
 A.
−5x + y = −6
 
 B.
5x + y = −6
 
 C.
(y – 4) = −5(x + 2)
 
 D.
(y + 4) = −5(x − 2)

anonymous · Answer

well the first one has a slope of 5 not -5 so throw that one away
then you are left with 3 choices. test then the point (-2, 4) by plug in the values for x and y in the given equations to see which one holds

anonymous · Answer

B for example you have 5x+y=-6
plug in (-2, 4)
i have 5(-2)+4=-6 i ask is this true
to check i carry on the arithmetic
-20+6=-14 so not true

anonymous · Answer

So on and so forth...

anonymous · Answer

only one will hold!

anonymous · Answer

Thank you! Could you help with this one?

A line has a slope of   and a y-intercept of 3.

Which equations represent the line?

Choose all answers that are correct.
 
 A. 2y=6+x
 
 B. x+2y=6
 
 
 C. y=-1/2+3
 
 D.(y-2)=-1/2(x-2)

I know that A is wrong and B and C are right but I'm not sure about D.