Constructing Equations

Find the equation using the table.

• y = 1/4x + 5

• y = 4x - 5

• y = -4x + 5

• y = -1/4x + 5

Bob has $150 in his savings account and saves $40 per month. Which equation represents the amount Bob has in his account after x months? 

• y =150x + 40

• y = 40x - 150

• y = 150x - 40

• y = 40x + 150

Construct a linear model for the graph.

• y = 1/2x - 2

• y = -1/2x - 2

• y = 2x - 2

• y = -2x - 2

Construct a linear model for the table.

• y = 8x + 2

• y = -6x + 2

• y = 6x + 2

• y = 6x + 8

The difference between 5 times a number and 3 is 12.

• 3h - 5 = 12

• 5h - 12 = 3

• 5h - 3 = 12

• 12h - 3 = 3

A number divided by 3 is 10.

• 3n=10

• 3-n=10

• n/3=10

A scuba diver dove 16 ft to an elevation of -50 ft. What was her elevation before the dive? Which equation matches the scenario?

• x - 1/6 = 50

• x - 16 = -50

• 1/6 x = 50

• -50 = 16x

If one roll of masking tape costs $1.15, how many rolls can Emma buy with $5.75?

• 1.15(5.75) = x

• 5.75x = 1.15

• 1.15x = 5.75

• x = 1.15/ 5.75

For a school assembly, 304 students are to be seated in rows with 16 students in each row. How many rows of students will be seated for the assembly? Let r be the number of rows.

• r = 304 ÷ 16

• r = 16 ⋅ 304

• 304r = 16

• r = 16 ÷ 304

• 16r = 304

A number divided by 3 is 10.

• 3n=10

• 3-n=10

• n/3=10