Ask your own question, for FREE!
Mathematics 7 Online
OpenStudy (anonymous):

Help

OpenStudy (primeralph):

pleh

OpenStudy (anonymous):

OpenStudy (primeralph):

find the range of values that satisfy the inequality

OpenStudy (anonymous):

ik i need to shade one side but how to find the points?

OpenStudy (anonymous):

what?

OpenStudy (primeralph):

pick any number such that -5*number + 4 is greater than the y

OpenStudy (anonymous):

-5(x)+4>y?

OpenStudy (anonymous):

its the same thing but how do i find the points sry

OpenStudy (whpalmer4):

Pick a point, any point — I usually pick (0,0) because the arithmetic is easy. Does it satisfy the inequality? If so, shade the side of the line that contains your test point. Otherwise, shade the other side.

OpenStudy (anonymous):

is it (-1,9) (0,4) (1,-1) (2,-6)?

OpenStudy (whpalmer4):

As for how you find the line, turn the inequality into an equality, and graph the line. Here you would have -5x + 4 = y.

OpenStudy (anonymous):

okay so 0=-5(0)+4?

OpenStudy (whpalmer4):

Pick any two points on that line and draw a straight line through them. Again, I like to pick 0 if at all possible, so let x = 0, y = -5(0)+ 4 = -5+4 = -1. (0,-1) is a point on the line. Next, let y = 0 and find x: 0 = -5x + 4, -5x = -4, x = 4/5, so (4/5, 0) is a point on the line. Draw a line through them. Now you've got your line showing the division, and you just need to find which side to shade.

OpenStudy (anonymous):

okay the shaded side is the left but i cant get the line through 4/5

OpenStudy (anonymous):

so 0,4 and 1,-1

OpenStudy (anonymous):

can you help me Jack?

OpenStudy (anonymous):

i think the answer is 0,4 and 1,-1. the the shaded is on the left side. am i right?

OpenStudy (anonymous):

am i right?

OpenStudy (jack1):

mate i'm sorry, i don't actually know what an inequality is your graph hits the y axis at point (0, 4) linear graph with gradient -5 crosses the x axis at point (0.8, 0) as the q states that y is smaller than -5x + 4, i'm just guessing but i think it's everything underneath the line (that's where the smaller y values are)

OpenStudy (anonymous):

okay thanks

OpenStudy (anonymous):

i know 0,4 is right but is 1,-1

OpenStudy (mertsj):

Mark 4 on the y axis. From that point, go down 5 and right 1. Draw the line and make it a solid line.

OpenStudy (mertsj):

Shade below the line.

OpenStudy (anonymous):

so i was right?

OpenStudy (mertsj):

|dw:1369450835431:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!