DAY 8- T. Zee Coordinate System

SPEED EASY (20 secs): What quadrant is the point (3,-1) located?

• I

• II

• III

• IV

SPEED EASY (20 secs): What quadrant is the point (-3,-1) located?

• I

• II

• III

• IV

SPEED EASY (20 secs): What quadrant is the point (-2,0)located?

• x-axis

• I

• Ii

• y-axis

SPEED EASY (20 secs): What quadrant is the point (1, 14/15) located?

• I

• II

• III

• IV

EASY: Which of the following is NOT a solution of y = (1/2)x -3 ?

• (0,-3)

• (2,-2)

• (2, -4)

• (4,1)

MEDIUM (60 secs): Find the y-intercept of the line with slope m= 5/8 containing the point (8,3)

MEDIUM (60 secs): What is the slope of the line containing (-3,-4) and (5,-2)? (HINT: It is a fraction. Numerator on the first box, denominator in the second box)

MEDIUM (60 secs): What is the y-intercept of the line containing the points (2,6) and (5,3)?

DIFFICULT (3 minutes) Bruce drives his car for his job. The equation R = 0.575m + 42 is the relation between the amount in dollars, R, that he is reimbursed and the number of miles, m, he drives in one day. Find the amount Bruce is reimbursed on a day when he drives 0 miles.

DIFFICULT (3 mins): Cherie works in retail and her weekly salary includes commission for the amount she sells. The equation S = 400 + 0.15c is the relation between her weekly salary, S, in dollars and the amount of her sales, c, in dollars. Find Cherie's salary for a week when her sales were $3,600.