Question

write an equation of a line in point slope form that has a slope of -3, and passes through the point (3,-4)

Answer 1

use the formula:

y - y1 = slope(x - x1)

Answer 2

but, i only have one set of points.

Answer 3

exactly, so put them in for y1 and x1 accordingly

Answer 4

ok. so then, y-(-4)=-3(x-3)?

Answer 5

yup that simplifies to y + 4 = -3(x - 3)

Answer 6

Distribute the -3 on the right side

Answer 7

y+4=3x+9

Answer 8

-3x

Answer 9

Now, get y b itself on the left side

Answer 10

y=-3x+5

Answer 11

yup, good job!

Answer 12

ok, thats in slope intercept form isnt it? not point slope form

Answer 13

yes, slope-intercept form is

y = mx + b which is what we have

Answer 14

right. but it says write the equation in point slope form, not slope intercept form.

Answer 15

blurbendy, i still need your help

Answer 16

point slope form is y - y1 = x(x - x1)