Question

using the points (3,1) and (1,-3) write an equation in slope-intercept form

i keep coming up with y=2x+6 but the back of my math book says its y=2x+5....am i wrong or is the book wrong? if im wrong plz show me the steps so i can compare them to my work

Answer 1

Try using google and search for "slope-intercept" and watch tutorials on how to do it, and if you can try asking you math teacher if you can re learn the material, or even get a tutor.

Answer 2

Your slope is correct at m=2
so your equation must be
y = 2x + b
sub in one of the points, say (3,1)
1 = 2(3) + b
b = -5

correct equation: y = 2x - 5

Both of the given points satisfy my equation, so you are both wrong.

Answer 3

thx u so much ^^