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GCSE Straight Line Graphs

can some1 help me tthis questiion pls
Give the full coordinate of the point where the line y =5x−3 crosses the x-axis.
Make a table like this:

x |-2 -1 0 1 2 3 4 5 etc.
---|------------------------------
y | <----- fill in the numbers for y using equation

Fill in the table using the equation y=5x-3

Where does it cross the x axis? :smile:

I hope this makes sense and helps :biggrin:
(edited 6 years ago)
Reply 2
Original post by laurawatt
Make a table like this:

x | 0 1 2 3 4 5
---|------------------------------
y | <----- all in the numbers for y using equation

Fill in the table using the equation y=5x-3

Where does it cross the x axis? If you put the numbers in the table into coordinates, then when does it look like this (0,_) with the 0 in the X axis? :smile:

I hope this makes sense and helps :biggrin:


i remember this< wait let me try thnks
Reply 3
Original post by laurawatt
Make a table like this:

x |-2 -1 0 1 2 3 4 5 etc.
---|------------------------------
y | <----- fill in the numbers for y using equation

Fill in the table using the equation y=5x-3

Where does it cross the x axis? :smile:

I hope this makes sense and helps :biggrin:

Original post by error405
can some1 help me tthis questiion pls
Give the full coordinate of the point where the line y =5x−3 crosses the x-axis.


The line crosses the x-axis when y=0.

So solve 5x-3=0
Reply 5
Original post by BobbJo
The line crosses the x-axis when y=0.

So solve 5x-3=0


x=3/5 so (3/5,0) thanks
Original post by error405

good! So now you know that 0 for the y has to be between 0 and 1 for the x

so 5x-3=0
so divide by 5 to get x by itself.
x-(3/5)=0
so then plus 3/5 to 0 to get the x on one side
this means that the line crosses the x axis at (0.6,0) which is the same as (3/5, 0)
Reply 7
Original post by laurawatt
good! So now you know that 0 for the y has to be between 0 and 1 for the x

so 5x-3=0
so divide by 5 to get x by itself.
x-(3/5)=0
so then plus 3/5 to 0 to get the x on one side
this means that the line crosses the x axis at (0.6,0) which is the same as (3/5, 0)


ttthanks

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