Question

A line crosses the y-axis at (0,4) and has a slope of -2. Find an equation for the this line.


A)
y = 2x + 4
B)
y = -2x + 4
C)
y = -2x - 4
D)
y = -4x + 2

Answer 1

y = mx + b
slope(m) = -2
(0,4)....x = 0 and y = 4
now we sub
4 = -2(0) + b
4 = b

so your equation is : y = -2x + 4

Answer 2

@jwhite12 obviously, but i don't know what numbers go where or i wouldn't be asking.
@texaschic101 thank you

Answer 3

sure thing :)