Algebra 8.1-8.2

What is the y-intercept of the equation
y = 2x²+8x+3?

• (0,3)

• (3,0)

• (0,2)

• y=8

Is this point (the vertex) a max or min?

• max

• min

Does this graph have a maximum or a minimum?

• Maximum

• Minimum

Does this question have a maximum or a minimum?

• Maximum

• Minimum

Using your calculator, graph y = 2x² + 4x - 3 and identify the max or min.

• Max: (-1, -5)

• Min: (-1, -5)

• Max: (-5, -1)

• Min: (-5, -1)

• (3,0)

• (2,0)

• (6,0)

• (-2,0)

• (-3,0)

Answer explanation

Identify the equation for the graph.

Answer explanation

What are the green dots called?

• axis of symmetry

• vertex

• parabola

• roots or x-intercepts

What is the green dot on the parabola called?

• maximum

• minumum

• roots

• zeros

Find the y-intercept of f(x) = 2x² - 2x + 1

• 2

• -2

• 1

• -1