Step-by-step explanation:
Change the sign of inequality to sign of equation.
First step:
Calculate the coordinates of two points of a line.
Choice any two values of x, put it to the equation and calculate the values of y.
Example:
y > 2x + 1 → y = 2x + 1
for x = 0 → y = 2(0) + 1 = 0 + 1 = 1 → (0, 1)
for x = -1 → y = 2(-1) + 1 = -2 + 1 = -1 → (-1, -1)
Draw a line passing through the given points.
If is < or >, then draw dot line.
If is ≤ or ≥, then draw solid line.
In our example, we have an inequality sign: >. Therefore, draw a dot line.
Second step:
Shading region:
If is < or ≤ - shading to the left.
If is > or ≥ - shading to the right.
In our example, we have an inequality sign: >. Therefore, shading to the right.
Are you supposed to multiply these? If so your answer would be (5x*x^2) + (5x*-x) + (5x*-7). This comes out to 5x^3 - 5x^2 - 35x. Hope this helps!
Given the question, it needs the points so that the equation can be evaluated and to know if the points is a solution to the equation or not.
ADDING THE 2 EQUATIONS TO ELIMINATE Y WE HAVE
-2.98x = -8.94
x = 3
Plug x=3 into first equation:-
-0.18(3) + y = -6.54
y = -6.54 +0.54 = -6
answer x= 3 and y= -6.
Answer:
Ratio = 5:1
= 5 / 1
Number of teachers = 15
Lets take the number of students = x
Therefore,
5:1 = x:15
= 5/1 = x/15
x = 15 × 5
=<u> 75 students</u>
Hope it helps!!