Question 11 MarkEquation of line perpendicular to line $a x+b y+c=0$ is given by $b x+a y+\lambda=0$, where $\lambda$ is a constant.AnswerfalseView full question & answer→
Question 21 MarkThe distance of point $\left(x_1, y_1\right)$ from line $a x+b y+c=$ 0 is given by$d=\frac{a x_1+b y_1+c}{\sqrt{a^2+b^2}}$AnswertrueView full question & answer→
Question 31 MarkEquation of line passing through points ( $\left.x_1, y_1\right)$ and $\left(x_2\right.$, $\left.y_2\right): y-y_1=\frac{y_2-y_1}{x_2-x_1}\left(x-x_1\right)$AnswertrueView full question & answer→
Question 41 MarkEquation of line passing through point $\left(x_1, y_1\right)$ having slope $m$ is given by $y-y_1=m\left(x-x_1\right)$.AnswerfalseView full question & answer→
Question 51 MarkEquation of line perpendicular to $x$-axis and at a distance $b$ unit from y-axis $x=b$ or $x=-b$.AnswertrueView full question & answer→
Question 61 MarkThe equation of a line parallel to $x$-axis at a distance ' $a$ ' is either $x=a$ or $x=-a$.AnswerfalseView full question & answer→
Question 71 MarkTwo lines are mutually perpendicular, if and only if product of their slopes is -1 .AnswertrueView full question & answer→