Question 976506
What is the equation of a line that passes through (-2,-1) and (-4, -3)
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slope intercept form of equation for a line: y=mx+b, m=slope, b=y-intercept
For given problem:
m=∆y/∆x=(-3-(-1))/(-4-(-2)=-2/-2=1
equation: y=1x+b
using coordinates (-2, -1) on the line
b=y-x=-1+2=1
equation: y=x+1