STAAR Success Lesson 5- Linear Functions

STAAR Success Leson 5-
Linear Functions

Linear Functions Part 1- This review focuses on writing linear functions given a variety of question types.
Open Desmos Testing Calculator: https://www.desmos.com/testing/texas/graphing

​Linear Function Formulas

Multiple Choice

Which function represents this relationship?

• $$y=-\frac{3}{2}x+4$$

• $$y=-\frac{3}{2}x-14$$

• $$y=-\frac{2}{3}x-9$$

• $$y=-\frac{2}{3}x+14$$

Multiple Choice

Which equation in slope intercept form best represents the line that passes through these two points?

• $$y=-\frac{2}{3}x-\frac{11}{3}$$

• $$y=-\frac{11}{3}x-\frac{2}{3}$$

• $$y=-\frac{2}{3}x-\frac{10}{3}$$

• $$y=-\frac{10}{3}x-\frac{2}{3}$$

Multiple Choice

Which correlation best describes the strength between the number of species added and the year?

• Weak negative correlation because $$r\approx-0.91$$

• Weak negative correlation because $$r\approx-0.09$$

• Strong negative correlation because $$r\approx-0.91$$

• Strong negative correlation because $$r\approx-0.09$$

Multiple Choice

A quadratic function can be used to model the data in the table. Which value best estimates the miles per gallon when the speed is 65 miles per hour?

• 27.9

• 31.0

• 40.2

• 24.9

Multiple Choice

Which equation best represents this situation?

• $$y=\frac{5}{9}x$$

• $$y=\frac{9}{5}x$$

• $$y=\frac{9}{5}x+32$$

• $$y=\frac{5}{9}x+32$$

Multiple Choice

What is the solution to $$5\left(2w+4\right)=4\left(2w+9\right)$$ ?

• $$w=\frac{5}{2}$$

• $$w=\frac{28}{9}$$

• $$w=5$$

• $$w=8$$

Multiple Choice

What equation is equivalent to $$A=\frac{1}{2}bh$$ ?

• $$b=\frac{2A}{h}$$

• $$b=\frac{A}{2h}$$

• $$b=\frac{A}{h}$$

• $$b=\frac{2}{Ah}$$

Multiple Choice

Which expression is equivalent to $$24ab-12a^2+18a$$ ?

• $$6a\left(4b-12a+18\right)$$

• $$12a\left(2b-12a+18\right)$$

• $$6a\left(4b-2a+3\right)$$

• $$12a\left(2b-a+3\right)$$

Multiple Choice

What expression is equivalent to $$\left(x-2\right)\left(7x+3\right)$$

• $$7x-17x-6$$

• $$7x^2-11x-6$$

• $$7x^2+17x+6$$

• $$x^2-11x-6$$

Word Cloud

How are you feeling about your Algebra 1 STAAR exam?

​Great job today!

Keep working on practice quizzes and watching the youtube videos. You got this!!!!

https://docs.google.com/spreadsheets/d/1abEn__a4QQL5YPK1JaKK29ZgN0P0E8q4/edit#gid=1077237303