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1] (3,0)……Substitute y=0 into the function.

0，-6）……Substitute x=0 into the function to calculate.

Area 3*6 2=9

2] As in the first question, find the intersection of the function with the x-axis and y-axis.

Intersect with the x-axis at (2,0).

Intersect with the y-axis at (0,2).

Area=2*2 2=2

3] Substitute the points a and b into the function.

Get a:-3k+b=-4

b：5k+b=4

The solution yields k=1

b=-1So, the function is y=x-1

then intersects with the x-axis at the point (1,0).

Intersect the y-axis at the point (0,-1).

4] Let the abscissa of point b be x

then 4x 2=6

Solution: x=3

Let the analytic formula of the line ab be y=kx+b

Substitute points A and B separately.

A:B=4

b：3k+b=0

Simultaneous solution: b = 4

k=-4/3

So, the analytic formula for the straight line ab is y=-4 3x+4

Hello. Solution:

"Order" can be understood as when. time).

Let y=0Then 2x-6=0 x=3 a(3,0).

Let x=0, then y=-6 b(-6,0).

s△abo=3x6÷2=9

2.Let x=0, then the coordinates of the intersection of the line and the y-axis are (0,2).

Let y=0, then the coordinates of the intersection of the line and the x-axis are (2,0).

Area = 2x2x1 2 = 2

3. Is the coordinate of b in your question (-5,4) or (5,4)?

Bringing the coordinates of the two points a and b into y=kx+b gives us a system of equations:

If b is (-5,4)))-3k+b=-4,-5k+b=4

If k=-4 and b=-16 are solved, the analytic formula is y=-4x-16

The coordinates of the intersection point with the coordinate axis are (-4, 0), (0, -16), respectively

If b is (5,4))-3k+b=-4,5k+b=4 the solution gives k=1 b=-1 and the analytic formula is y=-x-1

The coordinates of the intersection point with the coordinate axes are (-1,0)(0,-1).

4。ob=6 1 2 4=3 (discussed in two cases).

Let the analytic formula of ab be y=kx+ba(0,4) 0k+b=4 solution yields b=4

If point b is on the positive half axis of the x-axis, then the coordinates of point b are (3,0) 3k+4=0 k=-4/3 ∴y=-4/3x+4

If point b is on the negative half axis of the x-axis, then the coordinates of point b are (-3,0) -3k+4=0,k=4 3 y=4 3x+4

In summary, the analytic formula of the straight line AB is y=4 3x+4 or -4 3x+4

Hope, thank you.

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The opposite side of 30° is equal to half of the hypotenuse.