CSEC Maths - Graphing Linear Inequalities

[ayannalewis]

In a graph of inequalities you have chose to points and plug it in the inequalities to see you get the same answer of the inequalities they give us to use

[ayannalewis]

The inequalities is 2x+3y>=10= 2(-2)+3(1)>=10=4+3>10 this is false so we cannot shade the bottom let's chose another point (3, 3) and we going plug it into our inequalities 2x+3y>=10 = 2x+(3)+(3)>=10=6+9>=10=15>10 this is (true)

[ayannalewis]

You shaded the bottom part is solid line

[ayannalewis]

2x+3y=10 when x=5 2(5)+3y=10 = 10+3y=10 when x=(-4)+3y=10 3y=10+8= y=18/3=6

[AngelTiresha]

umm isnt it supposed to be 3Y=0 then Y=3 ? at 5:26

[ayannalewis]

You shaded the upper and is dash lines

[rajendramisir]

Alternatively, rewrite the linear inequality in gradient/intercept form. Then use the y-intercept value and the gradient value to sketch the graph of the inequality on the Cartesian plane.

[ayannalewis]

Dashline is greater than and less than is solid lines

[jodilliafigari]

You have a voice for math ..
I does understand everythin 🐒