Question

Solve : x+5y=45, if y=3​

Answer 1

Answer:

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Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

                     x-5*y-(45)=0 

STEP1:Equation of a Straight Line

 1.1     Solve   x-5y-45  = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  x-5y-45  = 0 and calculate its properties

Answer 2

Answer:

X=30

Y=3

Step-by-step explanation:

1. X+5y=45
2. Given y=3
3. Substitute y=3 in the given equation
4. Therefore x+5(3)=45
5. X+15=45
6. X=45-15

• That implies x=30
• X=30,y=3
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