SOLUTION: Hi, this is my math problem Determine the f(x) = mx + b, given the slope and y-intercept of the linear function. x-intercept -4, y-intercept -8 Thankyou so much.

Question 898155: Hi, this is my math problem
Determine the f(x) = mx + b, given the slope and y-intercept of the linear function.
x-intercept -4, y-intercept -8

Thankyou so much.
Found 2 solutions by stanbon, Fombitz:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Determine the f(x) = mx + b, given the slope and y-intercept of the linear function.
x-intercept -4, y-intercept -8
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x/(-4) + y/(-8) = 1
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Multiply thru by -8 to get:
2x + y = -8
-----
Solve for "y":
y = -2x-8
----------------
Cheers,
Stan H.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Determine the slope using the two points (-4,0) and (0,-8).

So then using the slope-intercept form of a line,

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