BHS Algebra I
Chapter 4 Test Review
Name _______________
Date________________
Fill-ins
1. The ______________ of a line is a ratio of the change in y to the change in x.
2. The point where the line crosses the y axis is called the _________________.
3. When there is a direct relationship between x and y we say that it is a _____________
_______________.
4. The graph of y = 2 is a ________________ line.
Slope!
1. (1, 2), (3,4)
2. (-5, 3), (3, y), m = -½
Are the lines parallel?
3. 10y + 20 = 6x, 5y = 3x + 35
Direct Variation!
The variables x and y vary directly. Use the given values to write an equation that relates x and
y.
1. x = 7, y = 35
2. x = ½, y = 6
Graph using. . .
X and y intercepts
1. 6x + 4y = -12
Slope and y intercept
2. 2x + y -11 = 0
3. x – 3y = 12
Functions!
Decide whether the relation is a function. If so, give the domain and the range.
Is the set of ordered pairs (-6, 2), (-7, 5), (-8, 2), (-6, 2), (5, 4), (10, 7) a
function? Explain why or why not.
Evaluate the function for the given value of the variable. (4 points)
a. f(x) = 10x – 4 when x = 0
b. g(x) = -x + 99 when x = -1
5
3
Graph f(x) = - x - 7
Should you study some more?