Y=3x+1 and y+5=-3(x-2)

X = -2/3 ; Y = -1

Step-by-step explanation:

Y=3x+1(eqn1)

Y+5= -3(x-2)

Y+5= -3x + 2

Y= -3x+2-5

Y= -3x-3(eqn2)

Equating (eqn1) =(eqn2)

3x + 1 = -3x - 3

3x + 3x = -1-3

6x = -4

X = -4/ 6 = -2/3

From eqn 1 Y = 3( -2/3) + 1 = -2 + 1 = -1

X = -2/3 ; Y = -1

19.side- angle- side

20. angle- side- angle

step-by-step explanation:

the arc length is found by finding the circumference of the full circle (2xpixradius) and then dividing by 4 to find just one quarter of the circle (90 degrees).