Line CD passes through points C(1, 3) and D(4, –3). If the equation of the line is written in slope-intercept form, y = mx + b, what is the value of b?
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put pts C and D in the eqn of line y= mx+ b and get 2 eqns in m and b.
Solve them to get m, b
Solve them to get m, b
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