Use the Parabola tool to graph the quadratic functions. Graph the parabola by first plotting its vertex and then plotting a second point on the parabola. (Applies to all functions.)

1. f(x)=2x^2−8x+9
2.f(x)=(x+4)^2−6
3. f(x)=(x−1)(x−3)

Step-by-step explanation:

hope it's helpful to you

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47