Question

Please help? Write an equation of the line, in point-slope form, that passes through the two given points.

points: (–2, 15), (9, –18)

Answer 1

can you calculate the slope of the line passing through those two points? use:
\(\Large slope=m=\frac{y_2-y_1}{x_2-x_1} \)

Answer 2

do you know how to use the slope formula?

Answer 3

would the answer be y-15=-3(x+2)

Answer 4

yep...:)

Answer 5

of course, the answer is not unique... you could've also used the other (9, -18)....
:)

Answer 6

*other point (9, -18)

Answer 7

thank you so much! do you mind helping?

Answer 8

i have one more

Answer 9

go ahead and post up a new question.... i don't think open study will run out of hard drive space anytime soon.

Answer 10

What is the equation of the given line in standard form? Use integer coefficients.

y = –1.7x + 8.5

Answer 11

this is standard form: Ax + By = C, where A, B, C are integer coefficients...

so in your slope-intercept form, we need to clear the decimals by multiplying by the whole equation by 10...
\(\Large y = –1.7x + 8.5 \)
\(\Large \color {red}{10}[y = –1.7x + 8.5] \)

can you tell me what youd get here?

Answer 12

17x + 10y = 85 ?

Answer 13

u got it.... :)
nice job..