1/19 CFA Unit 4A: Linear Relationships and Functions

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Allison is using different fertilizers on her plants in order to figure out which one is the best. The three different brands, Grow Miracle, Plant Pro Organic, and Safer Garden are represented below.

Safer Garden

Which brand started with the largest plant? __________
Which brand was used on the plant that had the greatest daily growth rate? __________
Which brand was used on the plant that will be the tallest on day 20? __________

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Consider the following equation.

-10y + 2x + 6y = 12

Identify the slope for this equation. __________

Identify the y-intercept for this equation. Write as an ordered pair. __________

Identify the x-intercept for this equation. Write as an ordered pair. __________

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Based on the given scenarios, does it make sense to use Slope Intercept form, Standard Form, or Point Slope form? Match each scenario to the appropriate form.

Julio plans to gain 2.4 pounds a week to prepare for a competition. After 13 weeks he weighs 154 pounds. What was his original weight?
2.24x - 6y = 310.
y = 1/2x +5
y - 155 = m(x - 113)
Angela opens a savings account with $100. Each month she deposited $50.
The school is sponsoring a pancake breakfast as a fundraiser. They expect 200 adults and 250 students to attend. They need to raise $3800. How much should they charge per ticket?

Slope Intercept Form
Standard Form
Point Slope Form

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A local gym is running a 6 month special for the month of January! New members will pay a $25 sign-up fee and then only $10 a month. 

Write an equation in slope-intercept form to represent this scenario. 
_______ 
Graph your equation in the show your work section. 
Your graph is part of the score for this question. 
What is the domain written in interval notation?_______ 
What is the range written in interval notation?_______ 

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The Ramsey family bought 4 sandwiches and 3 salads for lunch. They spent $34.00. Write an equation in standard form to represent this scenario. Where the number of salads is x and the number of sandwiches is y.

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You are collecting seashells this summer for an art project. After 4 days you have 18 shells. You plan to collect 6 shells per day. 
Write an equation in point-slope form to represent this scenario._______ 
Write in Slope-intercept form _______ 

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Based on the given scenarios, does it make sense to use Slope Intercept form, Standard Form, or Point Slope form? Match each scenario to the appropriate form.

The Ramsey family bought 4 sandwiches and 3 salads for lunch. They spent $34.00. Write an equation in standard form to represent this scenario. Where the number of salads is x and the number of sandwiches is y.

Choose the correct description of the end behavior for this graph.