I need to graph -0.2x- 0.6y = 0.12

2 answers:

6 0

This is under point slope intercept. so Ax+Bx=Cx. you can always change this to slope intercept which will be -.6y=.2x+.12 then give 1 a variable like 1 or 2 or something. then solve it, -.6y=.2+.12, -.6y=.32, y=-.53 so when x is 1, y is -.53. then make x 2 so -.6y=.52 so then when x is 2 y is -.86

Fantom [35]3 years ago

3 0

The easiest way to graph this equation would be using the intercepts. I would also make my scale on the axis in fifths because of the answers we will get.
To get the x intercept plug a zero in for y and solve.
-.2x-.6y=.12 -.2x-.6(0)=.12
x=-3/5
-.2(0)-.6y=.12 -.6y=.12
y= - 1/5

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2sin^2x - sinx - 3 = 0

e-lub [12.9K]

We have that
2sin²x - sinx - 3 = 0

Let
A------> sin x
so
2A²-A-3=0

using a graph tool-----> to resolve the second order equation
see the attached figure

the solutions are
A=-1
A=1.5------> is not solution because sin x can not be 1.5

the solution is
A=-1
therefore
sin x=-1
x=arc sin(-1)=-90°

the answer is
sin x=-1
x=-90° or 270°