Question

GAris k melalui titik A(-2,3). Garis l melalui titik C (-6,5) , D (-2,d) . Garis k tegak lurus garis l. Tentukan nilai d dan t.?

Answer 1

M=y2-y1/x2-x1m=1-3/3-(-2)m=-2/5
tegak lurusm1.m2=-1-2/5.m2=-1m2=-1.-5/2m2=5/2
y-y1=m(x-x1)y-5=5/2(x-(-6)y=5/2x+30/2+5-----------------------kalikan 22y=5x+30+102y=5x+40
D(-2,d)2y=5x+402d=5.-2+402d=-10+402d=30d=30/2d=15
T(t,-5)2y=5x+402.-5=5t+40-10=5t+40-10-40=5t-50=5t-50/5=t-10=t