Question

Draw the graph of the straight line whose table is given below.

$x$	$-1$	$1$	$...$	$0$	$3$
$y$	$-3$	$...$	$-7$	$-1$	$5$

Write down the linear relation between $x$ and $y$

• A. $y=3x-2$
• B. $y=x-2$
• C. $y=x-1$
• D. $y=2x-1$

Answer 1

The correct option is D $y=2x-1$

Slope of the equation $=\frac{y_2-y_1}{x_2-x_1}$

$=\frac{-1+3}{0+1}=2$

Equation of the line with slope $2$ through point $(-1,-3)$ is $y+3=2(x+1)$

$2x-y+2-3=0$

$2x-y-1=0$