Graphing Lines Representing Proportional Relation

The table shows a relationship for number of cars to trucks.  How many trucks should there be if there are 12 cars?

• 3

• 12

• 36

• 48

The table shows a relationship for number of cars to trucks.  If there are 15 trucks, how many cars should there be?

• 3

• 5

• 15

• 45

Identify the constant of proportionality:

y = 7x

Identify the constant of proportionality:

y = 0.5x

What is the constant of proportionality for this table?

• K=8

• K=3

• K=1/9

• K=9

What is the slope of this line?

• 4

• 2

What is the y-intercept of this line?

• 4

• 2

What is the equation for this line?

Find the slope.

Hint: rise/run

• -5/3

• -3/5

• 5/3

• 5

Which of these is in slope-intercept form?

• y2 - y1/x2 - x1

• Ax + By = C

• y = mx + b

• a + b = c