Finding X Intercepts of Polynomials

Tags

CCSS.HSF-IF.C.7C

Identify the zeros of the following function:
f(x)= (x-4)(x+3)

• 3 and -4

• (3,0) and (4, 0)

• (-3, 0) and (4, 0)

• (3, 0) and (-4, 0)

Tags

CCSS.HSF-IF.C.7C

x³ – 2x² – x + 2

Are these the correct zeros for the equation above?

x = 2,-1,1

• MAYBE

• YES

• NO

• I DON'T KNOW

• NO, IT'S 1,-2,2

The roots of this polynomial

( x + 3 ) ( x - 2 ) ( x + 5 ) are

• 3, -2 y 5

• -3, 2 y 5

• 3, 2 y -5

• -3, 2 y -5

Tags

CCSS.HSF-IF.C.7C

Complete the sentence (2 right answers): the multiplicity of an x-intercept...

• Determines exactly what happens near the x-int on the graph

• Helps with the calculation of the x-int

• May determine the sign of the leading coefficient

• Suggests two possibilities for the behavior of the graph near the x-int

What are the zeros of the polynomial function? y = x(x - 6)(x + 5)

(The THREE factors that you need to set equal to zero are x, x-6, and x+5)

• 0, 6, -5

• 6, -5

• 0, -6, 5

• 1, -6, 5

Tags

CCSS.HSF-IF.C.7C

TRUE or FALSE:

Multiplicity refers to the number of times an x-intercept occurs in a polynomial.

• TRUE

• FASLE

Tags

CCSS.HSF-IF.C.7C

Give the x-intercept
3x + 8y = 24

• (8, 0)

• (0, 8)

• (3, 0)

• (0, 3)

From the equation y = 3x + 18,  what is the value of the x-intercept?

• -6

• 6

• 18

• 3