Question

How do you graph the line `y = 2x + 5`?

Answer 1

`"see explanation"`

Explanation:

`"one way is to find the intercepts, that is where the graph"`
`"crosses the x and y axes"`

`• " let x = 0, in the equation for y-intercept"`

`• " let y = 0, in the equation for x-intercept"`

`x=0rArry=0+5=5larrcolor(red)"y-intercept"`

`y=0rArr2x+5=0rArrx=-5/2larrcolor(red)"x-intercept"`

`"plot the points "(0,5)" and "(-5/2,0)`

`"draw a straight line through them for graph"`
graph{(y-2x-5)((x-0)^2+(y-5)^2-0.04)((x+5/2)^2+(y-0)^2-0.04)=0 [-10, 10, -4, 6]}