Applications Using Direct Variation
Key Questions

Answer:
Direct variation in real life.
Explanation:

A car travels
#x# hours with a speed of#"60 km/h"# #># the distance:#y = 60x# 
A man buys
#x# bricks that cost#$1.50# each#># the cost:#y = 1.50x# 
A tree grows
#x# months by#1/2# meters each month#>#
the growth:#y = 1/2 x#


A good question
Suppose we have to pay up the parking bill at a mall
ON THE BILL BOARD IT SAYS
________
FOR A 4 HOUR PARKING YOU HAVE TO PAY $3.24

AND UNDER IT A LED SAYS YOU HAVE BEEN HERE FOR (5HRS)



_________now what would you do
you would use direct variation
let me make a table
let x be the cost

hours parked __ cost
4  $3.24
5 
# x # #(3.24* 5)/4 = x # solving for
#x # you will get#4.05#
Questions
Graphs of Linear Equations and Functions

Graphs in the Coordinate Plane

Graphs of Linear Equations

Horizontal and Vertical Line Graphs

Applications of Linear Graphs

Intercepts by Substitution

Intercepts and the CoverUp Method

Slope

Rates of Change

SlopeIntercept Form

Graphs Using SlopeIntercept Form

Direct Variation

Applications Using Direct Variation

Function Notation and Linear Functions

Graphs of Linear Functions

Problem Solving with Linear Graphs