The angles of a triangle are 2x, 3x, and 4x degrees. find the value of x.
a) 20
b) 30
c) 40
d) 50

2x+3x+4x=180
9x=180
180/9=20
therefore x= 20, so A

Idon't see any graph, however the graph of the function : f(x) = x²-2x+3 is a parabola: 1) open upward (since a> 0)2) it intersects y-axis in 3 (y=3)3) its axis of symmetry is x = +1 ( -b/2a)4) it's minimum is y = -2, so its vertex is (1,-2)5) it doesn't intersect the x-axis since discriminant < 0