Question

Write the equation of a line in point-slope form that has a slope of -1 and passes through the point (-2, 5).
help please i always get point slope form mixed up with y=mx=b im not sure which one to use?

Answer 1

use
\[y-y_1=m(x-x_1)\] with
\[y_1=5,x_1=-2, m=-1\]

Answer 2

you have it right, y=mx+b is point intercept form, the m is -1, so plug into the equation the values you have for x, y, and m to find b

Answer 3

y=mx+b
5=-1(-2)=b
5=2+b
3=b
so the equation is y=-1x+3

Answer 4

thanks

Answer 5

y= mx+b is slope-intercept form, not point-slope form