Question

How do you graph the equation `y=4x-1`?

Answer 1

Passes through `(1/4,0) and (0,-1)`

Explanation:

Basically, this is a straight line in the form `y=mx+b`

Our gradient m is 4 which is positive, so our straight line slopes to the right

You need to solve the equation to see where your line crosses the x and y axis.

• To find y is easy
  Let `x=0`
  so `y=4(0)-1`
  Giving us `y=-1`
  So now we know our graph passes through `y=-1`
• For x we use a similar process
  Let `y=0`
  So we get `4x-1=0`
  Hence, `x=1/4`

So now we know our graph passes through `x=1/4` and `y=-1` and has a positive gradient. So we can draw it. graph{y=4x-1 [-5, 5, -2.5, 2.5]}