Homework Help: Math: slope problem

Posted by Anonymous on Saturday, January 10, 2009 at 3:06pm.

Suppose a line passes through the point (6 caps, $3/cap) and has a slope of -3. Which of the following points also lie along that line? Select all that apply.

a) 4 caps, $9/cap
b) 7 caps, $0/cap
c) 5 caps, $5/cap
d) 2 caps, $7/cap
e) 7 caps, $1/cap
f) 4 caps, $5/cap

My answer: a, c, e

Am I correct?

Math: slope problem - bobpursley, Saturday, January 10, 2009 at 3:14pm
If the line is

3=-3*6+b
b=21 so
$/cap=-3(caps)+21

a) 9=-3(4)+21=-12+21=9 checks
b) 0=-3(7)+21=0 checks
c) 5=-3(5)+21=6 does not check
You can check the rest.
maths ncrt - paras, Friday, December 31, 2010 at 2:26am
(0-8/5)is a solution of 2x-5y=7 is/not how

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