1. Week Day 15 1 Pam used the following process to find the
y-intercept of the line described by the equation 2x – y = 11.
Step 1 Subtract 2x from both sides.
–y = –2x + 11
Step 2 Divide each side by –1.
y = 2x – 11
Step 3 The y-intercept of y = mx + b is b.
y-intercept is –11
According to Pam’s method, which expression gives the y-intercept of the line described by the equation ax + by = c? A. B. C. D.

2. Week Day 15 2
Which number serves as a counterexample to the statement below?
A prime number plus one is not prime. A. B. C. D. 2 3 11 17

3. Week Day 15 3
The sum of the angle measures of a triangle is 180°. Two angles of a triangle measure 35° and 65°. What can you conclude is the measure of the third angle of the triangle? A. B. C. D.
80°
90°
100°
It cannot be determined.

4. Week Day 15 4 What are the x- and y-intercepts of the graph of A. B.
x-intercept: –2; y-intercept: 5
x-intercept: ; y-intercept: –2
x-intercept: 0; y-intercept: –2
x-intercept: 5; y-intercept: –2

5. Week Day 15 5
A system of equations is set up to determine how many pounds of hazlenut coffee and how many pounds of Colombian coffee were mixed together to make a blend. The total mixture was 20 pounds of coffee. Which of the following is not a possible solution to the system? A. B. C. D.
(7, 13)
(32, –12)
(11, 9)
(1, 19)