Question

Solve the system by substitution.
y=-7x-3
5x+4y= -35

Answer 1

Answer: (x,y)=(1,-10)

Explanation:

y=-7x-3

5x+4y=-35

substitute the value of y

5x+4(-7x-3)=-35

solve the equation

x=1

substitute the value of x

y=-7 x 1-3

solve the equation

y=-10

A possible solution is

(x,y)=(1,-10)

Check the solution

-10=-7 x 1-3

5 x 1+4 x (-10)=-35

simplify

-10=-10

-35=-35

The ordered pair is a solution

(x,y)=(1,-10)