PreAlg Acc Unit 6 Test Review Linear Functions

Front

What is the range of the function {(9,8), (7,6), (5,4), (3,2)}?

Back

{2,4,6,8}

Front

Identify the x-intercept of the graph.

Back

(-4, 0)

Front

Is the relation {(1,2), (2,3), (1,4)} a function?

Back

Not a function

Front

Write an equation in slope-intercept form of the line that passes through the points (-4,-7) and (-6,9).

Back

y = -8x - 39

Front

What system of equations can be used to find the number of donkeys (d) and chickens (c) on a farm with 50 animals and 174 legs?

Back

d + c = 50; 4d + 2c = 174

Front

Define a linear function.

Back

A function that can be graphically represented as a straight line.

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you find the slope between two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What does the x-intercept represent in a graph?

Back

The point where the graph crosses the x-axis (y=0).

Front

What is a function?

Back

A relation where each input has exactly one output.