Linear and Proportional Relationships

Write the equation for the line in slope-intercept form.

• y= -1x+3

• y= 4x+3

• y=1/4x+3

• y= -4x+3

Find the slope and y-intercept of this line.

• Slope is 3/2, y-intercept is 2

• Slope is 2/3, y-intercept is 2

• Slope is -3/2, y-intercept is 2

• Slope is -2/3, y-intercept is 2

What is the slope in the picture?

• Positive

• Negative

• Zero

• Undefined

Jen interviewed 150 students for the school paper. Found that 90 students volunteer at a charity. What percent of the students volunteer at the charity?

• 60%

• 50%

• 70%

• 80%

15% of a number is 30. What is the number?

• 4.5

• 20

• 45

• 200

An urban planner drew a map of his town. On the map, 2 inches represent 3 miles. The table shows distances on the map and actual distances. Complete the table

• 12 in. = 18 mi, 20 in. = 30 mi.

• 12 in. = 20 mi, 20 in. = 35 mi.

• 12 in. = 15 mi, 20 in. = 25 mi.

• 12 in. = 22 mi, 20 in. = 33 mi.

The graph shows the relationship between Miguel's hourly wages as a web designer (w) and the number of hours worked (t). Complete the equation to represent the relationship between w and t.

• w = t * 40

• w = t + 40

• w = t - 40

• w = t / 40

Ken is designing the parking lot for a local arts theater. The graph shows the relationship between the number of parking spaces (p) and the area of a parking lot (a). Express the relationship with an equation.

• a = p * 300

• a = p + 300

• a = p / 300

• a = 300 - p

Lea earns $12 per hour working as an intern for an activist group. Which of the following points represent the relationship between Lea's wages and the hours she worked?

• (1, $12) and (2, $24)

• (1, $10) and (2, $20)

• (1, $15) and (2, $30)

• (1, $12) and (2, $22)

Chad ran in an election for mayor. He received 65% of the vote. Of the 1260 people who voted, how many voted for Chad?

• 819

• 500

• 600

• 700