How do you graph # y=2x+ 4#?

Question

6101 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-25T02:10:00

See a solution process below:

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

First Point: For #x = 0#

#y = (2 * 0) + 4#

#y = 0 + 4#

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

Second Point: For #x = -2#

#y = (2 * -2) + 4#

#y = -4 + 4#

#y = 0# or #(-2, 0)#

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

graph{(x^2+(y-4)^2-0.035)((x+2)^2+y^2-0.035)=0 [-10, 10, -5, 5]}

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

graph{(y-2x - 4)(x^2+(y-4)^2-0.035)((x+2)^2+y^2-0.035)=0 [-10, 10, -5, 5]}