Asked by Amy
write in parametric form the equation of the line that joins (1,-2) and (3,0)
Answers
Answered by
Damon
dy/dx = 2/2 = 1
so y = x + b
0 = 3 + b
b = -3
so y = x - 3
if x(t) = k t for example
then y(t) = x(t) - 3
y(t) = k t - 3
so y = x + b
0 = 3 + b
b = -3
so y = x - 3
if x(t) = k t for example
then y(t) = x(t) - 3
y(t) = k t - 3
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