Question

Write the equation of a line with the slope of -2 which contains the point (3,6)

Answer 1

Use the point slope formula:
\[\LARGE y-y_{1}=m(x-x_{1})\]

Answer 2

Where m=slope and x1/y1 are (x, y)

Answer 3

Plug value of the slope and point ( -3 , 6 ) in
Y = m x + b


6.00 = 3 + b
b= 6 -3
b= 3
So the equation will be
Y = -1 x + 3

Answer 4

slope is -2, not -1 Luigi

Answer 5

y = mx + b
(3,6) x = 3 and y = 6
slope(m) = -2
now sub all of that into y = mx + b and solve for b

Answer 6

@texaschic101 what method is that?

Answer 7

you do not have to use point slope formula if it doesn't ask for point slope formula in the answer...you can just as easily use slope intercept formula

Answer 8

Alrighty

Answer 9

y = mx + b
6 = -2(3) + b
6 = -6 + b
6 + 6 = b
12 = b
equation is : y = -2x + 12

or
y - y1 = m(x - x1)
y - 6 = -2(x - 3)
y - 6 = -2x + 6
y = -2x + 6 + 6
y = -2x + 12

you will get the same answer either way. I just find it easier to use slope intercept, rather then point slope, unless it asks for point slope.