Line Graphs, Graphing Lines

You buy a laptop for 2500 kr, and the value goes down 100 kr per year. When will the value be 500 kr?

15 years

You buy a laptop for 2500 kr, and the value goes down 100 kr per year. How much is it worth after 10 years?

1500 kr

You buy a laptop for 2500 kr, and the value goes down 100 kr per year. How much is it worth after 2 years?

2300 kr

You buy a laptop for 2500 kr, and the value goes down 100 kr per year. When will the value be 0?

25 years

Write a function that shows the connection between Price P and the amount (hg) of sweets you buy. The price for sweets is 9.90 pr hg, and x is how many hg you buy.

P= 9.90x

The price for sweets is 0.90 pr/hg, but you must pay 5 kr for the cup you're using for the sweets. Write the function.

P= 9.90x + 5

x axis

The line on a graph that runs horizontally (left-right) through zero.

y axis

The line on a graph that runs vertically (up-down) through zero.

The intercept in the equation y = mx + c is

c

The slope in the equation y=mx + c is

m

Origin

the point (0,0) where the x-axis and the y-axis intersect in a coordinate plane

solve for x: 3x - 3 = x - 9

x= -2

Solve for x: 6x-4=5-3x

x= 1

Solve for x: 3*(2x+4)=24

x= 2

Solve for x. x-7=1

x=8

You buy a laptop for 2500 kr, and the value goes down 100 kr per year

y= -100x + 2500

You rent a scooter for 20 kr plus 200 kr per hour

y= 200x + 20

You rent a bicycle for 200 kr plus 20 kr per hour

y= 20x + 200