Write the equation of a line in standard form that has x-intercept (−P, 0) and y-intercept (0, −R).

A. Px − Ry = −PR
B. Px − Ry = PR
C. Rx + Py = −PR
D. Rx + Py = PR

Question

Write the equation of a line in standard form that has x-intercept (−P, 0) and y-intercept (0, −R).

A. Px − Ry = −PR
B. Px − Ry = PR
C. Rx + Py = −PR
D. Rx + Py = PR

carmelle · Answer

i don't understand...

Joe348 · Answer

$$\frac{ y2-y1 }{ x2-x1}$$

you understand you are using this equation right?

carmelle · Answer

yea, i already put it in y = mx + b format and got:

slope:$$-\frac{ R}{ P }$$

$$y = - \frac{ R }{ P }x~-R$$

Joe348 · Answer

Okay so multiply the equation by P ;-;

carmelle · Answer

im lost...

Joe348 · Answer

You have to re-arrange the equation so to do that you multiply it by P, you see the p on the equation $$-\frac{ r }{p}x$$
multiply everything by P on each side

Joe348 · Answer

once you do that, it'll be
$$py=-rx+rp$$

Joe348 · Answer

But your not totally finished, as you can see that's not of the answer choices, so you need to reword it

Joe348 · Answer

@joe348 wrote:

once you do that, it'll be $$py=-rx+rp$$

Are you able to finish it yourself?

carmelle · Answer

$$rx ~+~ py =~pr$$

i got D?

Joe348 · Answer

Yeah, nice

carmelle · Answer

tysm :)

Joe348 · Answer

np ;) glad to help now help me lol

carmelle · Answer

D ended up being wrong :')

Joe348 · Answer

oh im so sorry

carmelle · Answer

nah, its fine, dw