Draw your own images.
2.y=- 1/2x y=2x+5
X=-2 y= 1 B(-2, 1)。
3.2x+5=0 x=-5/2 A(-5/2,0)
x=0 y=5 C(0,5)S= 1/2*5/2* 1=5/4
4.y 1 =- 1/2x 1 Y2 =- 1/2 x2
y 1-Y2 =- 1/2(x 1-X2)>0y 1 & gt; Y2
5.Case 1bo = bobo = radical number 5 P (radical number 5,0) p (-radical number 5,0) (0,5) (0,5).
Case 2 bo = pbp (0,2) (-4,0)
In the case of 3bp=po bo, the vertical line is y=2x+5/2.
p(0,5/2) (-5/4,0)
6. because OC is the y axis, the abscissa of q is twice that of b.
X=-4 or 4
Q( -4,2) (-4,-3) (4,-2) (4, 13)