Question

Write an equation in standard form for a line with a slope of -1 passing through C(2,1)

Answer 1

Standard form : Ax + By = C

y = mx + b
slope(m) = -1
(2,1)...x = 2 and y = 1
now we sub
1 = -1(2) + b
1 = -2 + b
1 + 2 = b
3 = b

equation is : y = -x + 3, but we need it in standard form

y = -x + 3 -- add x to both sides
x + y = 3 <== standard form

Answer 2

how did you get the equation?

Answer 3

wait nvm. thank you so much for ur help