Linear Equations
x + 5=12
x = 7
what is a slope
Rise over run
what is the y-intercept y=2x+3
3
what is a functions
(y)is the output and (x)input
what does proportional mean
Same ratio
3x = 21
x = 7
FIND THE SLOPE:(1,2) and (3,6)
2
Graph goes up or down if the slope is positive
UP
is this a function (1,2),(2,3),(1,4)
NO!!
is y=3x proportional
yes
2x+ 4=10
x=3
FIND THE SLOPE:(2,5)and (4,5)
0
Graph goes up or down if the slope is negative
Down
is this a function (1,2),(2,3),(3,4)
Yes
what is the constant of proportionality in y=5x
5
5x - 2= 18
x=4
FIND THE SLOPE:(3,2)and (3,8)
undefined
what is the slope of y=-3x+1
-3
What is the output if f(x)=2x and 3x
6
is y=2x+1proportional
No
3(x+2)=18
x=4
FIND THE SLOPE:(-1,2)and (2,-4)
-2
identify slope and intercept of y=4x-2
slope= 4 y-intercept= -2
what is f(5) if f(x)=x+7
12
if y/x=4 what is the relationship
y=4x