Question

Help with this equation plzz

Answer 1

Answer:

D

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = $\frac{1}{3}$ x - 2 ← is in slope- intercept form

with slope m = $\frac{1}{3}$

Given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{\frac{1}{3} }$ = - 3 , then

y = - 3x + c ← is the partial equation

To find c substitute (4, - 7) into the partial equation

- 7 = - 12 + c ⇒ c = - 7 + 12 = 5

y = - 3x + 5 → D

Answer 2

Answer:

option C I think

Step-by-step explanation:

I remember learning about this last year