Question 217392: what is the Y-intercept of the line that passes through the points (7,4) and
(-3,9) Found 2 solutions by checkley77, elima4:Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! (7,4) (-3,9)
Slope=(9-4)/(-3-7)=5/-10=-2 is the slope
4=-2*7+b
4=-14+b
b=4+14
b=18 the y intercept.
y=-2x+18 (graph 300x200 pixels, x from -6 to 15, y from -10 to 20, -2x +18).
You can put this solution on YOUR website! First we need to find the slope;
so now we have;
y = -1/2x + b
Now use either point in our equation and solve for b;
4 = -1/2(7)+b
4 = -7/2 + b
4 + 7/2 = b
8/2 + 7/2 = b
15/2 = b
This is the y-intercept;
b =
:)
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