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DudeMagic
Y=-X+4 finding the y intercept, b and slope, mx thus y=mx+b
nobrains
Find the slope, then use substitute the slope and one of the given points into slope-intercept form.

Slope is change in y over change in x. (7-3)/(-3-1)=-1

Slope-inttercept form is y = mx+b.
3 = -1(1)+b
b=4

y = -x + 4

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