Which of the following equations correctly describes the graphed line? y = -1/2x - 5

y = -1/2x + 5

y = 1/2x + 5

y = 1/2x - 5

Option C i.e. y = 1/2x + 5 is the correct option.

Step-by-step explanation:

The slope-intercept form of the line equation

y = mx+b

where

Given the points

A(4, 7)

B(-4, 3)

Determining the slope between A and B

Using the formula

Slope = m =  [y₂ - y₁] /  [x₂ - x₁]  

                 =  [3 - 7] / [-4 - 4]    

                 = -4 / -8

                 = 4/8

                 = 1/2

Thus, the slope of the line = m = 1/2

We know that the value of the y-intercept can be determined by setting x = 0 and determining the corresponding value of y.

From the graph, it is clear

at x = 0, y = 5

Thus, the y-intercept b = 5

now substituting m = 1/2 and b = 5 in the slope-intercept form

y = mx+b

y = 1/2x + 5

Therefore, the equation of line in the graph is:

y = 1/2x + 5

Thus, option C i.e. y = 1/2x + 5 is the correct option.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.