Question 21 MarkThe distance between lines $Ax + B y+ C _1=0$ and $A x$ $+ B y+ C _2=0$ is _____________Answer$\frac{\left|c_1-c_2\right|}{\sqrt{ A ^2+ B ^2}}$View full question & answer→
Question 31 MarkIf two lines are mutually perpendicular, then their slopes are _____________Answernegatively inverseView full question & answer→
Question 41 MarkIf lines $l_1$ and $l_2$ are parallel then their slopes are _____________AnswerequalView full question & answer→
Question 61 MarkThe angle made by line $l$ with positive $x$-axis is called _____________AnswerslopeView full question & answer→
Question 71 MarkThe combination of algebra and geometry is called _____________AnswerCoordinateView full question & answer→