Writing Equations of Lines given two points

Write the equation of

each line

enter it as: 3/2x-3

If the slope is 1 or -1, do not write 1x or -1x,

just x or -x.

If the slope is a fraction, for instance:

Take note of how to enter answers:

y = x - 3

Figure 7 of a tile pattern has 20 tiles. Figure 8 of the

same pattern has 22 tiles. The tile pattern grows at a

constant rate. Write an equation representing this tile

pattern.

y =

Lyra has a job babysitting her neighbor's children to

save money to buy a new video game system.

After working 5 nights, she had $140. After working 7

nights, she had $170. She earns the same amount each

night working. Write an equation representing this

situation.

y =

Vida is studying the squirrel population in Care Park.

Five years into her study, there were 120 squirrels.

Eight years into her study, there were 111 squirrels

remaining. She found that the population of squirrels

is decreasing at this constant rate. Write an equation

representing this situation.

y =

Dequarius bought a box of cookies to enjoy at lunch

every day. Each day, he eats the same number of cookies.

After 14 days, he had 20 cookies left in the box. After

19 days, the cookies were gone. Write an equation

relating the number of cookies left in the box to the

number of days after buying them.

y =