у = 2х + 3
а) 2x+3=0⇒x=-1.5
y(0)=3
б) y(-2)=2*-2+3=-4+3=-1
y(-1)=2*-1+3=-2+3=1
y(2)=2*2+3=4+3=7
в) 2x+3=-3⇒x=-3
2x+3=1⇒x=-1
2x+3=4⇒x=1/2
у = 2х + 3
а) 2x+3=0⇒x=-1.5
y(0)=3
б) y(-2)=2*-2+3=-4+3=-1
y(-1)=2*-1+3=-2+3=1
y(2)=2*2+3=4+3=7
в) 2x+3=-3⇒x=-3
2x+3=1⇒x=-1
2x+3=4⇒x=1/2