- #1
Peter G.
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The graph of function f (x) 3x - 4 intersects the x-axis at point A and the y-axis at point B.
Find the coordinates of:
a)
i) A
ii) B
b) Let O denote the origin, find the area of triangle OAB
So my answers:
i) 0 = 3x - 4
3x = 4
x = 4/3
Coordinates: (4/3,0)
ii) (0, -4)
so, for b: b x h / 2:
(-4 x 4/3) / 2
= - 8 / 3
But the book says it is: 8/3 √x - 4 + 3
Any help please?
Thanks,
Peter G.
Find the coordinates of:
a)
i) A
ii) B
b) Let O denote the origin, find the area of triangle OAB
So my answers:
i) 0 = 3x - 4
3x = 4
x = 4/3
Coordinates: (4/3,0)
ii) (0, -4)
so, for b: b x h / 2:
(-4 x 4/3) / 2
= - 8 / 3
But the book says it is: 8/3 √x - 4 + 3
Any help please?
Thanks,
Peter G.
Last edited: