What is an equation in slope-intercept form for the line that passes through the points (1, –3) and (3, 1)?
A. y=3x+1
B.y=x-3
C.y=2x+5
D. y =2x-5

Question

What is an equation in slope-intercept form for the line that passes through the points (1, –3) and (3, 1)?  
A. y=3x+1
B.y=x-3
C.y=2x+5
D. y =2x-5

anonymous · Answer

There will be 2 equations. Here's to get you started.
y=mx+b

 Point (1,-3)
-3=m(1)+b

 Point (3,1)
1=m(3)+b

I think it's easiest to use the substitution method.

anonymous · Answer

Do you know how to do solve for it?

anonymous · Answer

yea can i give you what i think it is and you see if it right /

anonymous · Answer

yeah

anonymous · Answer

You're very close.

anonymous · Answer

not c

anonymous · Answer

yes! you can also check your answers by graphing them here's a link to a graphing calculator http://my.hrw.com/math06_07/nsmedia/tools/Graph_Calculator/graphCalc.html

anonymous · Answer

Thanks Alot , can i ask you more and you check my answers !

anonymous · Answer

yeah

anonymous · Answer

Suppose y varies directly with x, and y = 24 when x = 8. What is the value of y when x = 10

anonymous · Answer

a.10
B.30
C.80
D240

anonymous · Answer

@helplesspenguin and i think it is 30

anonymous · Answer

you're right.good job

anonymous · Answer

any other questions?