+Ответ:
Объяснение:
1) (-2;0) (0;-3)
(y-0)/(-3-0)=(x-(-2))/(0-(-2))
-y/3=(x+2)/2 |×(-3)
y=(-3/2)*(x+2)=-1,5*(x+2)
y=-1,5x-3
2) (4;0) (0;-1)
(y-0)/(-1-0)=(x-4)/(0-4)
-y=(x-4)/(-4) |×(-1)
y=(x-4)/4
y=0,25x-1 ⇒
{y=-1,5x-3
{y=0,25x-1
-1,5x-3=0,25x-1
1,75x=-2 |÷1,75
1³/₄*x=-2
(7/4)*x=-2
x=-8/7 ⇒
y=(-8/7)*0,25x-1
y=(-8/7)*(1/4)*x-1
y=(-2/7)-1
y=-1²/₇
y=-9/7.
Ответ: {y=-1,5x-3
{y=0,25x-1 x=-8/7 y=-9/7.
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+Ответ:
Объяснение:
1) (-2;0) (0;-3)
(y-0)/(-3-0)=(x-(-2))/(0-(-2))
-y/3=(x+2)/2 |×(-3)
y=(-3/2)*(x+2)=-1,5*(x+2)
y=-1,5x-3
2) (4;0) (0;-1)
(y-0)/(-1-0)=(x-4)/(0-4)
-y=(x-4)/(-4) |×(-1)
y=(x-4)/4
y=0,25x-1 ⇒
{y=-1,5x-3
{y=0,25x-1
-1,5x-3=0,25x-1
1,75x=-2 |÷1,75
1³/₄*x=-2
(7/4)*x=-2
x=-8/7 ⇒
y=(-8/7)*0,25x-1
y=(-8/7)*(1/4)*x-1
y=(-2/7)-1
y=-1²/₇
y=-9/7.
Ответ: {y=-1,5x-3
{y=0,25x-1 x=-8/7 y=-9/7.