Alexis paid $50 to activat her cell phone plus a service fee of $20 per month . She used the phone for 3 months . How much has s
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name the points
a=(x1,y1) b=(x2,y2)
a=(6,8) b=(9,10)
use the slope formula
replace
answer= The slope is equal to 2/3
a=(9,10) b=(6,8)
using the formula
slope will also be 2/3