Relations & Functions Equations with 2 Vars Slope and yintercept Writing Equations Scatter Plots 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50 Relations and Functions 10 points Is the relation a function? {(0, 1), (0, 2), (0, 3), (0, 4)} ANSWER Relations and Functions 10 points Is the relation a function? {(0, 1), (0, 2), (0, 3), (0, 4)} No. The x-value of 0 has more than 1 y-value. Relations and Functions 20 points Is the relation a function? ANSWER Relations and Functions 20 points Is the relation a function? Yes. Relations and Functions 30 points Is the relation a function? ANSWER Relations and Functions 30 points Is the relation a function? Yes. Relations and Functions 40 points Is the price of a piece of cloth a function of the length of the cloth? ANSWER Relations and Functions 40 points Is the price of a piece of cloth a function of the length of the cloth? Yes. Relations and Functions 50 points In the function below, there is a pattern to describe how the range values relate to the domain values. Write a function rule for the pattern. {(-2, 0), (0, 2), (3, 5), (8, 10)} ANSWER Relations and Functions 50 points In the function below, there is a pattern to describe how the range values relate to the domain values. Write a function rule for the pattern. {(-2, 0), (0, 2), (3, 5), (8, 10)} y=x+2 Equations with 2 Variables 10 Points Is (3, 2) a solution of 4x – 3y = 6? ANSWER Equations with 2 Variables 10 Points Is (3, 2) a solution of 4x – 3y = 6? Yes. 12 – 6 = 6 Equations with 2 Variables 20 points Find the solution for y = 4x + 2 when x = -5 ANSWER Equations with 2 Variables 20 points Find the solution for y = 4x + 2 when x = -5 (-5, -18) Equations with 2 Variables 30 points Give two different solutions for the equation y = x - 3 ANSWER Equations with 2 Variables 30 points Give two different solutions for the equation y = x – 3 Infinitely many answers. Some examples are (0, -3) and (1, -2). Equations with 2 Variables 40 points Graph the linear equation y = 8. ANSWER Equations with 2 Variables 40 points Graph the linear equation y = 8. Equations in 2 Variables 50 points Give the equation of a vertical line that passes through the point (-2, 5). ANSWER Equations in 2 Variables 50 points Give the equation of a vertical line that passes through the point (-2, 5). X = -2 Slope and y-intercept 10 points What is the slope of the line below? ANSWER Slope and y-intercept 10 points What is the slope of the line below? -1/3 Slope and y-intercept 20 points What is the y-intercept of the line below? ANSWER Slope and y-intercept 20 points What is the y-intercept of the line below? (0, 2) Slope and y-intercept 30 points What is the slope between the points (9, 4) and (5, 8)? ANSWER Slope and y-intercept 30 points What is the slope between the points (9, 4) and (5, 8)? -1 Slope and y-intercept 40 points Give the slope of a horizontal line and the slope of a vertical line. ANSWER Slope and y-intercept 40 points Give the slope of a horizontal line and the slope of a vertical line. Horizontal = 0 slope Vertical = no slope or undefined Slope and y-intercept 50 points Graph a line with a slope of 2/5 that passes through the point (5, 4) ANSWER Slope and y-intercept 50 points Graph a line with a slope of 2/5 that passes through the point (5, 4) Writing Rules 10 points Write a rule for the table. ANSWER Writing Rules 10 points Write a rule for the table. y=x-9 Writing Rules 20 points Write a rule for the graph. ANSWER Writing Rules 20 points Write a rule for the graph. y = (-4/5)x + 2 Writing Rules 30 points Write a function rule that expresses the perimeter p(s) of a square as a function of its side length s. ANSWER Writing Rules 30 points Write a function rule that expresses the perimeter p(s) of a square as a function of its side length s. p(s) = 4s Writing Rules 40 points Write a rule for the function that contains the points (0, 5) and (1, 8). ANSWER Writing Rules 40 points Write a rule for the function that contains the points (0, 5) and (1, 8). y = 3x + 5 Writing Rules 50 points Write a rule for the table. ANSWER Writing Rules 50 points Write a rule for the table. y = 2x - 3 Scatter Plots 10 points Does the scatter plot have a positive or negative correlation or no correlation? ANSWER Scatter Plots 10 points Does the scatter plot have a positive or negative correlation or no correlation? Negative correlation. Scatter Plots 20 points Would you expect a positive or negative correlation or no correlation for the age of pets in a home and the number of pets in a home? ANSWER Scatter Plots 20 points Would you expect a positive or negative correlation or no correlation for the age of pets in a home and the number of pets in a home? No correlation Scatter Plots 30 points How long does it take the student who lives 0.5 miles from school to get to school? ANSWER Scatter Plots 30 points How long does it take the student who lives 0.5 miles from school to get to school? 10 minutes Scatter Plots 40 points How many students live more than 2 miles from school? ANSWER Scatter Plots 40 points How many students live more than 2 miles from school? 6 students Scatter Plots 50 points Use the scatter plot to predict the number of moose when the wolf population is 18. ANSWER Scatter Plots 50 points Use the scatter plot to predict the number of moose when the wolf population is 18. 1,200 moose