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Algebra L9-2 Quiz v3

Last updated over 2 years ago

6 Nsɛmmisa

1

1

1

Asemmisa {{asɛmmisaAhyɛnsode}}

3.

What are the x-intercepts of the graph y=x^{2}+2x-15?

1

1

1

Asemmisa {{asɛmmisaAhyɛnsode}}

1.

What is the factored form of the function shown in the graph?

(x+5)(x+4)

(x+5)(x-4)

(x-5)(x-4)

(x-5)(x+4)

Asemmisa {{asɛmmisaAhyɛnsode}}

2.

What are the solutions of the equation 3x^{2}+2x-8 = 0?

2 \textrm{ and } \frac{3}{4}

-2 \textrm{ and } -\frac{3}{4}

2 \textrm{ and } -\frac{4}{3}

-2 \textrm{ and } \frac{4}{3}

Asemmisa {{asɛmmisaAhyɛnsode}}

4.

If the vertex of a parabola is always located halfway between the x-intercepts, what are the coordinates of the vertex of the parabola y=x^{2}+2x-15?

Asemmisa {{asɛmmisaAhyɛnsode}}

5.

Solve the equation by factoring:
2r^{2}+5r-11=-13

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6.

A 20\textrm{ ft}\times 10\textrm{ ft} stage is bordered on three sides by "backstage" and "wing" space that is x feet wide. The overall dimensions of the combined lot and walkway are 20 \textrm{ ft}\times 10 \textrm{ ft}. The combined area is 450\textrm{ ft}^{2}. What is the value of x?