Just need on graph. plz explain if you can. i have a few more questions like this.

Vertex-either the highest point or lowest depending on which way the parabola is (-1,-9)

Y- int- where the graph intersects the y int- (0,-8)

X- int- where the graph intersects the x int- (-4,0) and (2,0)

axis of symmetry- where the line could be folded in half and be the same- x=-1

equation: (x-1)^2 -9=y

-4

step-by-step explanation:

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.