Question

(x, 1) and (-3, 7); slope: -3

Answer 1

Answer:

x = - 1

Step-by-step explanation:

( $x_{1}$ , $y_{1}$ )

( $x_{2}$ , $y_{2}$ )

m = $\frac{y_{2} -y_{1} }{x_{2} -x_{1} }$

~~~~~~~~~~~~~

Assume,

x = $x_{1}$

1 = $y_{1}$

- 3 = $x_{2}$

7 = $y_{2}$

m = - 3

then

$\frac{7-1}{-3-x}$ = - 3

- 3 - x = 6 ÷ ( - 3 )

- 3 + 2 = x

x = - 1