Question

How do you graph `y=3x+4`?

Answer 1

See a solution process below:

Explanation:

First, solve for two points which solve the equation and plot these points:

First Point: For `x = 0`

`y = (3 * 0) + 4`

`y = 0 + 4`

`y = 4` or `(0, 4)`

First Point: For `x = 1`

`y = (3 * 1) + 4`

`y = 3 + 4`

`y = 7` or `(1, 7)`

We can next plot the two points on the coordinate plane:

graph{(x^2+(y-4)^2-0.1)((x-1)^2+(y-7)^2-0.1)=0 [-20, 20, -10, 10]}

Now, we can draw a straight line through the two points to graph the line:

graph{(y-3x-4)(x^2+(y-4)^2-0.1)((x-1)^2+(y-7)^2-0.1)=0 [-20, 20, -10, 10]}