Intercepts and Zeros

To solve a quadratic by graphing is to find where the parabola crosses the x-axis. We call these the ___. Select all that apply.

• zeroes

• x-intercepts

• solutions

• roots

• y-intercepts

What are the zeros of this graph?

• {-4, 2}

• (4, 0 ) and (-2, 0)

• {-1, 0}

• (-1, 9 ) and (0, -8)

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

How many solutions are there?

• 2 imaginary

• 1 repeated real

• 2 real

• 0

When looking at a quadratic graph, the solution(s) are always the _____________.

• y-intercept

• vertex

• x-intercept(s)

• axis of symmetry

Use the graph to determine the solutions.

• x = -1 and x = -3

• x = 1 and x = -3

• x = 1 and x = 3

• x = -1 and x = 3

What are the x- intercepts?

• (0,0) and (-4,0)

• (0,0) and ( 4,0)

• (0,0) and ( 2, -2)

• (0, 4) and (0, 0)

What is the equation for this parabola in factored form?

• y=(x+2)(x-1)

• y=(x-2)(x+1)

• y=(x-2)(x-1)

• y=(x+2)(x+1)

In factored form you can see the ______ of the graph easily.

• y-intercept

• vertex

• x-intercepts

Write the equation of the graph in factored form.

• y= (x-4)(x+3)

• y = -(x+3)(x-4)

• y = (x+4)(x-3)

• y = -(x-3)(x+4)