Assignment: 4th Quarter Review #1

Tables of values for four functions are shown. Which table best represents an exponential function?

• f(x)

• g(x)

• h(x)

• j(x)

Answer explanation

Exponential tables grow by multiplication.

Tags

CCSS.HSF-LE.A.1A

Tags

CCSS.HSA.APR.C.4

Answer explanation

Easy Way:

Type into your calculator and see where the graph crosses the x-axis (or look on the table when y=0).

Harder Way:

To find the zeros algebraically:

1. 1. Set equal to zero (replace y with zero)

2. 2. Factor

   3. 3. t-chart and solve

Answer explanation

Using a table:

Type equations into y1 and y1. Then look at the table to see where y1=y2.

The answer is the x-value(s).

Using a graph:

Find the point(s) of intersection.

The answer is the x-value(s).

Tags

CCSS.HSA.REI.C.7

Tags

CCSS.HSA.APR.C.4

• hours per inch

• minutes per inch

• inches per hour

• inches per minute

Answer explanation

Ignore the numbers for this question and cancel out units (labels).

You can only cancel out units if there is one on the numerator (top) and one on the denominator (bottom) of the fraction.

You cannot cancel units if they are both on the numerator (top) .

You cannot cancel units if they are both on the denominator (bottom).

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Answer explanation

To solve an equation:

1. distribute:

2. 2. Combine like terms on the left side of the equal sign. Combine like terms on the right side of the equal sign. Do not combine terms across the equal sign!

3. 3. Get variables to one side, using adding or subtracting.

4. 4. Get variable alone by adding or subtracting constant term that is next to the variable term.

5. 5. Last step is divide by the coefficient (if you have a fraction, then multiply by the reciprocal)

Tags

CCSS.8.EE.C.7B

Tags

CCSS.HSA.APR.A.1

• 1 unit left and 2 units down

• 1 unit left and 2 units up

• 1 unit right and 2 units down

• 1 unit right and 2 units up

Answer explanation

Type both equations into the calculator and look at the graphs.

Tags

CCSS.HSF.BF.B.3