Algebra I Unit 5 Practice Test

• The graph has a y-intercept at (6,0).

• The coordinates of the vertex is (3,-3).

• The graph opens downward.

• The x-intercepts are at (0,0) and (6,0).

Here is the graph of a quadratic function g.

Select all equations that could define the function g.

• The y-intercept of the graph is at (0,c).

• The graph has an x-intercept at (c,0).

• When a<0, the graph opens downward.

• The graph has two x-intercepts.

• If b=0. then the vertex is on the y-axis.

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Whose stone hit the water first?

• Ruby

• John

• They hit the water at the same time.

When did the rock (that fell first) hit the ground?

Write the number of seconds it took for the rock to hit the ground.

Ruby's stone reached its maximum height 2.5 seconds after it was thrown. Did Ruby's stone reach a higher maximum than John's stone?

• yes

• no

What was the maximum height of Ruby's stone? Round your answer to the nearest hundredth.

What was the maximum height of John's stone?

• (-3,7)

• (3,7)

• (3,-7)

• (-3,-7)