Question

Use the Parabola tool to graph the quadratic function.

f(x) = 2x2 + 8x + 10
Graph the parabola by first plotting its vertex and then plotting a second point on the parabola

Answer 1

• y=2x²+8x+10

X coordinate of vertex

• -8/2(2)
• -8/4
• -2

y coordinate

• y=2(4)-16+10
• y=-8+10
• y=2

Vertex is at (-2,2)

Put x=0

• y=10

Graph attached

Answer 2

Explanation:

f(x) = 2x²+8x+10

vertex point :

x = -8/2(2)= -8/4

=> x = -2 <= this is a symetry axis

f(-2)= 2(-2)²+8(-2)+10=8-16+10=2

the vertex point : (-2, 2)

intercept with y-axis :

f(0) = 0+0+10 = 10

the point : (0, 10)

the drawing as attached