Pre-Algebra: Day 46Ms. Ubik

Warm-up:Compete the worksheet you picked up off the table.Write an equation in slope-intercept form for each situation. If you don’t remember what slope-

intercept form is LOOK IT UP (I know I had you write it down!)

TARGETS:

•Complete Barbie Bungee Lab•Use lines to predict outcomes

40 People You Should Meet

#25

Whoever this very adventurous kid is…

You did an experiment this weekend while watching the

Bears Game. You noticed that when Cutler threw 3 passes, he had 1 reception. When he

threw 5 passes, he had 3 receptions. When he threw 9 passes, he had 5 receptions,

and at 18 passes, 11 receptions

Lets graph this data and write a line to

satisfy the equation.x y

You did an experiment this weekend while watching the Bears

Game. You noticed that when Cutler threw 3

passes, he had 1 reception. When he

threw 5 passes, he had 3 receptions. When he threw 9 passes, he had 5 receptions, and at 18 passes, 11 receptions

x y

Now lets write an equation of this

line…To write the equation of a line in slope intercept form,

you need two things:1.) The slope of the line

2.) The y-intercept of the line

Predicting

• We can use this equation to predict statistics about Cutler.

• For example, use the equation to predict how many receptions there would be if Cutler threw 6 passes.

• 11 passes?• 39 passes?

Predicting

• We can also predict the y-values…• For example, use the equation to predict

how many passes Cutler would have to throw for 10 complete receptions.

• 15 receptions?• 22 receptions?