A.What is the value of the y coordinate of the solution to the system of equations.:
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1 PROBLEMS A to G are similar to CEAFE problems: A.What is the value of the y coordinate of the solution to the system of equations.: x + 3y = 2-3x - 8y = B. Is (3,-) a solution to x y = 7 x + 3y = -9 C. What is the equation of a horizontal line through (-3,7) D. Draw the graph of the equation. Hint : Find x and y intercepts -3x + y = 2 E. Find the equation of the line passing through the points (-2, 3) and (, -3). Then write the equation in slope intercept form. F. Find the equation of the vertical line passing through the point (-5, -2) G. Find the slope and y intercept for the graph of the equation: ` 3x + y = 8 MORE PROBLEMS:. Find each rate. Sec 3. (a) Joe bikes 0 miles in hours (b) bananas cost $9.20 (c) Al lost 2 pounds in 8 days 2. Word problems with proportions. Section.7 Solve be setting up a proportion. (a) If there are rotten apples in a barrel of 5, how many rotten apples would be in a barrel of 20? (b) Dale rode a rental bike for hours and cost $ How much would it cost if Dale rode for 0 hours? (c) Deidra rented a bike from the same place and spent $2.50. How long did she rent the bike for?
2 (d) Alice can paint 3 rooms in 7 hours. If she works for 8 hours, how many rooms can she paint? (e) McDonald s four piece chicken nugget has 200 calories. How many calories are in a nine piece chicken nugget? 3. Graph each line and write the slope: Sec 3.3 & 3.5 (a) x = -3 (b) y = 5 (c) 5x = 5 (d) y = 0 (e) -2y =. Graphing by intercepts. Sec 3.3 (a) Find the x-intercept and y-intercept for 5 y 20 x. (b) Graph this line using the x-intercept and y-intercept (c) Find the x and y intercepts for -3x + y = -2 (d) Graph this line using the x-intercept and y-intercept 5. Slope: Sec 3.5 (a) Find the slope of the line containing the points whose coordinates are (3,0) and (,9) (b) Find the slope of the line containing the points whose coordinates are (,) and (5, 8) (c) Draw a line passing through coordinates (0,) with slope (d) Graph y = -2 and state the slope (e) Graph 8x = 2 and state the slope through point
3 y x (d) Draw a line passing through (-2,3) with slope 0 y x. Sec 3. (a) Find the slope and y-intercept of x + 3y = 2. (b) Graph the line in (a) using the slope and y-intercept. (c) Find the slope and y-intercept of the graph of (d) Graph the line in (c) using the slope and y-intercept. 7. Sec 3., 3.7
4 (a) Find the equation of the line that passes through the point whose coordinates are (2, ) and has slope 3. (b) Find the equation of the line that contains points whose coordinates are (, ) and (5, 3). (c) Find the equation of the vertical line that passes through the point whose coordinates are ( -, 2 ) (e) Determine whether each pair of equations represents parallel lines. Y= 2x + 3 and 7y + 2x = (f) y = -3x + and x + 2y = 0 8. Determine an equation for this graph. Avg. Hourly Earnings at McF.ry King since 995 average houry earnings number of years since
5 9. Solving a system of two equation by Graphing Method: Sec 7, (a) y = 3x 3 (b) y = 2x + 7x + y = 7 5x + y = 0 (c) y = x + 8 (d) 3x 2y = x y = 7 x y = 0. Solve the system of equations by Substitution method: Sec 7.2 (a) y = 2x 3y x = 2. Solving a system of two equation by Elimination by Addition Method: Sec 7.3 x y = 0 5x y = 2 2. Use any method to solve a system to find the value of the x-coordinate to the following system of equations. 3/207 Revised
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