Question

A one-variable linear equation can be solved using the method of graphing a related system of linear equations. Use the graph of the system below to solve the related one-variable linear equation. –2x = –4

A.
x = 2
B.
y = –1
C.
x = 0
D.
( 2, –4)

Answer 1

The solution is x = 2

Explanation:

We have given a one-variable linear equation.

-2x = -4

We have to find the solution of given equation by using method of graphing.

Graph of given equation is straight line whose y-intercept is (2,0).

Hence, solution is x = 2.

Answer 2

Choice A is the correct answer

Explanation:

we simply solve the equation graphically by plotting the system of equation on a graphing calculator.

from the attachment below, the graph of the system crosses the x-axis at the point where x = 2, which is the solution required.