Algebra 1 1st Semester Mid-term Review

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

Is it a function? (A function is a relationship with no repeating x-values with new y-values)

A question asking if y is a function of x is asking...

25 + x ≤ 100

Amy got a gift certificate to American Eagle that had $100 on it. She is planning to use $25 of it to buy a t-shirt. Which inequality could she use if x represents how much she could spend on other items?

A continuous line or curve where domain and range values cannot ALL be identified. (any graph where the coordinates are connected by a line or curve)

Continuous can be defined by...

y=2x-3

Convert 8x-4y = 12 to slope intercept form.

m = 2

Determine the slope of the line 4x-2y = 10

A set list of domain and range values. (table, map, set list, scatter plot)

Discrete can be defined by...

All x-values, input, values on the x-axis, the horizontal span of the function.

Domain can be defined by...

Earnings per hour of work.

For Joey's job at Kroger's he earns $7 per hour. His total pay is represented by the function T = 7h, where h is the number of hours worked, and T is the total amount of pay. What does the slope of this function represent?

f(-1) = -14

If f(x) = 2(x-3) + x - 5 then what is the value of f(-1)?

x = 0

If y=1/2 x +8, what is the value of x when y = 8?

y=x+2

If y=x is graphed two units higher, what is the new equation?

Yes, there are no repeating x-values.

Is {(1,2),(2,3),(3,4),(4,5),(5,6)} a function?

y = 25 + .60x

Joe makes $25 per hour plus .60 per mile. The equation is...

Lines

Linear Functions graph as...

Number of burgers

Max's burgers charges $1.50 per quarter pound burger. If James buys $15.00 worth of burgers. What does x represent?

All y-values, output, values on the y-axis, the vertical span of a function

Range can be defined by...

2x-1

The first six numbers in a pattern are shown: {1,3,5,7,9} What is the expression that represents this relationship?

Constant or y-intercept (both are correct)

The following rule was determined to describe a pattern, y = 9x - 3. What is the number -3 called?

Rate, Unit Rate, Rate of change and slope (all are correct)

The following rule was determined to describe a pattern, y = 9x - 3. What is the number 9 called?

Tickets the instructor could purchase with $63.00 {1,2,3,4,5,6,...19} Why can he not purchase 20 tickets?

What is a reasonable domain if a school group attends a play that costs $2.50 per ticket plus a $15 group fee. The instructor has $63.00 to spend. Create a reasonable domain (the number of tickets the instructor can buy).

29.92=8.99x+2.95 Rate of Change = 8.99

When ordering pizza from Dominoes, it cost $2.95 delivery charge plus $8.99 per pizza. If Deb pays $29.92...Write the equation, name the rate of change.

x=-2

When y=-4x + 2 is graphed, what is the value of x when 10=-4x+2?

y = -2x - 4

Write the equation of a line that passes through the point (-1, -2) and (4, -12).

y=x-6

Write the equation that would represents a vertical shift of the linear parent function by -6 units.

Roots, x-intercepts, special solutions, horizontal intercepts

Zeros are also known as...

y=mx+b or y=mx Example: y=4x-2 or y=3x

A linear equation can look like...

constant rate of change

A linear function in a table has a...

x = -2

2(x - 2) - 4 = x - 10

All real numbers

2(x - 5) - 4 = 2x - 14

No Solution

3(x - 5) - 4 = 2x + 11 + x

A graph, list, table or mapping with no repeating input values (no repeating x-values)

A function can be defined by...


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