What is the constant in this expression? m-4n+3.5+4/5p

3.5

Step-by-step explanation:

We are given that an expression

We have to find the constant in the given expression

Constant:That number which is numerical number and do not change remain same.

Variable : That number which is represented by letter x, y  etc and varying and do not remain  same.

In the given expression 3.5 is constant because 3.5  is fixed and do not change.

Hence, 3.5 is  constant.

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form

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