1.
State the slope and
y
-intercept of the graph of
y
=
x
– 7.
A.
The slope is -
, and the
x
-intercept is 7.
B.
The slope is -7 and the
y
-intercept is
.
C.
The slope is
, and the
y
-intercept is -7.
D.
The slope is 7, and the
y
-intercept is -
.
Hint
2.
Graph
y
= -2
x
- 1 using the slope and
y
-intercept.
A.
B.
C.
D.
Hint
3.
Graph
y
= 4
x
- 3 using the slope and
y
-intercept.
A.
B.
C.
D.
Hint
4.
A T-shirt company charges a design fee of $25 and then sells the shirts for $10 each. The total cost
y
can be represented by the equation
y
= 10
x
+ 25, where
x
represents the number of T-shirts. The graph of the equation is shown. Describe what the slope and
y
-intercept represent.
A.
The slope represents the one-time design charge. The
y
-intercept represents the cost per T-shirt.
B.
The slope represents the cost per T-shirt. The
y
-intercept represents the one-time design charge.
C.
The slope represents the number of T-shirts. The
y
-intercept represents the cost per T-shirt.
D.
The slope represents the total cost of the T-shirts. The
y
-intercept represents the one-time design charge.
Hint
5.
A long-distance phone company charges $5 per month and $0.10 per minute. The total bill
y
for the month can be represented by the equation
y
= 0.10
x
+ 5. The graph of the equation is shown. Describe what the slope and
y
-intercept represent.
A.
The slope resents the number of minutes used. The
y
-intercept represents the monthly charge.
B.
The slope represents the monthly charge. The
y
-intercept represents the cost per minute.
C.
The slope represents the cost per minute. The
y
-intercept represents the monthly charge.
D.
The slope represents the total bill. The
y
-intercept represents the cost per minute.
Hint