Question

Help?!?

Answer 1

Explain, in complete sentences, how you would use the graphing method to solve the following system of equations and what the final solution will look like on the coordinate plane.

\[4x-5y>-15\]
\[x+y \le-5\]

Answer 2

@ParthKohli @ganeshie8 @texaschic101

Answer 3

@phi

Answer 4

can you graph the line
4x−5y = −15
?

Answer 5

Yes. @phi

Answer 6

@phi
https://www.desmos.com/calculator/lqttkg7p5i

Answer 7

if you can graph 4x−5y = −15
then do so.

because you actually have the relation
4x−5y > −15

make the line "dashed" (because it is > not ≥)

next, you need to decide which side of the dashed line is the "solution"
one easy way is test the point (0,0). Point (0,0) is (obviously) on one side of the line. if we use x=0 and y=0 in the relation we get
4*0 - 5*0 > -15
0 > -15

if that is true, then (0,0) is part of the solution ... and all points on the same side of the line are also solutions.

Answer 8

now do the same thing for
x + y ≤ -5

Answer 9

Can you do this ?

Answer 10

@desmond063 your best bet is to ask @Acarpenter2 for help on this question.

Answer 11

Here @desmond063 this link will help explain.

http://www.virtualnerd.com/pre-algebra/real-numbers-right-triangles/trigonometic-ratios/missing-angles-examples/tangent-example