Section 1.4 and 1.5

1. Which snack food is a main ingredient in dynamite? Answer: Peanuts 2.What are women more likely to do in the bathroom than men? Answer: Wash their hands (only 50 – 60% of men regularly wash their hands after using the restroom) 3.If you were to spell all the numbers, when does the letter ‘A’ first appear? Answer: One thousAnd

1.4 Topic: Writing the Equation of a Line Example: Write the equation of the line in slope-intercept form… Slope = ______ Y-int = ______ Equation: y = ______

1.4 Topic: Writing the Equation of a Line A car depreciates in value by $500 each year. If after 3 years, the value of the car is $14,500 find the equation of the line in slope-intercept form that represents the overall cost of the car. Hint: What is the slope in this case? What is a point on the line?

1.4 Topic: Writing the Equation of a Line According to US Census data, 34% of adults between the ages of 25 to 34 had earned a post-secondary (AA, Bachelor’s, etc.) degree in In 2014, 39% of adults between the ages of 25 and 34 earned a post-secondary degree. a)If x is the year, and y is the percentage, write each set of numbers as an (x,y) coordinate. b)Find the linear equation that represents this in y = mx + b c)Using this model, predict the percent of adults who will have a post-secondary degree in 2020.

1.4 Topic: Parallel and Perpendicular Lines Slopes of parallel lines are ____________________.

1.4 Topic: Parallel and Perpendicular Lines Slopes of perpendicular lines are ____________________.

1.4 Topic: Parallel and Perpendicular Lines Write the equation of a line going through the (-3, 7) and parallel to the line a)y = mx + b b)What is ‘m’ in this case? c)How would you find the y-intercept?

1.4 Topic: Parallel and Perpendicular Lines Write the equation of a line going through the (6, 0) and perpendicular to the line a)y = mx + b b)What is ‘m’ in this case? c)How would you find the y-intercept?

1.4 Topic: Parallel and Perpendicular Lines Find ‘y’ so that the points (-3, 5) and (4, y) and parallel to the line containing the points (1, 4) and (-3, 2) * Write your answer as a decimal *

1.5 Topic: Solving Equations with Fractions Solve the following equations… 1) 2)

1.5 Topic: Solving Equations with Fractions Find the zero of the function f(x) = Find the zero of the following graph:

1.5 Topic: Solving Equations with word problems Simple Interest Formula: I = Prt; P = principal; r = rate; t = time IN YEARS Example: Matt borrows money from the credit card company to buy an iPad. He pays off the debt after 1 year, and pays a total of $975. What was the original cost of the iPad?

1.5 Topic: Solving Equations with word problems Lupe earned $2,012 in a particular week by working 52 hours. She earns her regular hourly pay for the first 40 hours, and time and a half (1.5 times her normal rate) for every hour over 40. What is Lupe’s hourly rate?

1.5 Topic: Solving Equations with word problems A plane’s speed is 650 miles per hour. The plane is flying against a wind of 25 miles. How long does it take the plane to fly 2750 miles?