9/4 Learner/Securing

Jared drew a graph of a linear function.

What is the equation of line in slope-intercept form (y=mx+b)?

Mathematical Equivalence

ON

The Andersons are filling their swimming pool. This table shows the amount of water in gallons available in the swimming pool over time.

What is the slope?

• m = 10

• m = 20

• m = 40

• m = 60

The Andersons are filling their swimming pool. This table shows the amount of water in gallons available in the swimming pool over time.

What is the y-intercept?

• b = 80

• b = 90

• b = 100

• b = 110

The Andersons are filling their swimming pool. This table shows the amount of water in gallons available in the swimming pool over time.

Write an equation of the line in slope-intercept form.

Mathematical Equivalence

ON

Lee took a ride share to go to school this morning. The table below shows the relationship of the charge, y and the number of minutes, x.

What is the equation representing Lee’s ride?

Chase works on writing an equation of the line of the graph shown below in math class.

What equation should Chase build for the graph?

Mr. Kent asked his students to determine the equation of the line that passes through points (0, -1) and (1, 2). Quinn, one of Mr. Kent’s students, showed her work below and Mr. Kent marked her work wrong. Examine Quinn’s work and explain why her work is wrong.

Quinn's work ​ (a)   . She must correct ​ (b)   .​

The correct slope is ​ (c)  

• is not correct
• is correct
• step 2
• step 1
• step 3
• step 4
• none
• 3
• -3

Mr. Kent asked his students to determine the equation of the line that passes through points (0, -1) and (1, 2). Quinn, one of Mr. Kent’s students, showed her work below and Mr. Kent marked her work wrong.

Write the correct equation of the line in slope-intercept form.

Mathematical Equivalence

ON

Jace worked part time at a car dealer shop last month. He makes $12.95 per hour and commission of $500. Jace wants to write a linear equation y that represents the total amount of money he earned, where x represents the number of hours he worked.

Write an slope-intercept equation of the linear function that represents the total amount of money Jace earned.

Mathematical Equivalence

ON

Raymond sketches the graph of a line representing the number of blocks he can walk in a number of minutes. He uses two recent trips to different parks to plot points o his graph. Raymond’s graph is shown below. What is the equation of Raymond’s line?