The equation relates 3 variables.
7x + 2y = 2
if x= 3, and y = 2. what is the value of z?

z = 25

Step-by-step explanation:

7x + 2y = z

x = 3

y = 2

z = ?

First, let's put in the values we do know.

7(3) + 2(2) = z

Let's solve this.

7 * 3 = 21

2 * 2 = 4

21 + 4 = z

Now, we must add the two together to find z.

21 + 4 = 25

25 = z

z = 25

160

step-by-step explanation:

idk

i hope i

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