Question
Determine the slope and y-intercept of the line that passes through the points (−2, 1) and (6, 3).
m= _____ b= _____
m= _____ b= _____
Answers
Anonymous
slope = m = (3-1) / (6+2) = 2/8 = 1/4
so
1 = (1/4)(-2) + b
1 = -1/2 + b
b = 3/2
so
y = (1/4) x + 3/2
================
Check
===============
3= m (6) +b ?
3 = 6/4 + 3/2 ?
3 = 12/4 ??
yes, whew !
so
1 = (1/4)(-2) + b
1 = -1/2 + b
b = 3/2
so
y = (1/4) x + 3/2
================
Check
===============
3= m (6) +b ?
3 = 6/4 + 3/2 ?
3 = 12/4 ??
yes, whew !