13 years ago
Alian
Favorite Answer
y + 3x = 36
Subtract 3x from both sides.
y = 36 - 3x
The number in front of the x is the slope: -3.
You need to have a line that contains the point (x1,y1) = (3/4, 1/2).
Set up the equation like this, in point-slope form:
(m is the slope)
y - y1 = m (x - x1)
So
(y - 1/2) = -3(x - 3/4)
distribute the -3 to x and to -3/4:
y - 1/2 = -3x + 9/4
add 1/2 to both sides
y = -3x + 9/4 + 1/2
y = -3x + 9/4 + 2/4
answer:
y = -3x + 11/4
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