Aparabola contains the points (5,0) and (-4,0) . what is the equation of its axis of symmetry?

Notice, (5,0) and (-4,0), the y-coordinate is 0, namely those are x-intercepts, the vertex is halfway between them, namely the vertex is at 0.5 over the x-axis.

therefore the equation of the axis of symmetry will be the x = 0.5.

Find 2 numbers multiply those 2 numbers the answer will be -30 but if add them together will get 7so 10 and -3 are the two numbers10(-3) = -3010+(-3) = 7(x-3)(x+10) hope this !