Is the equation of this line in slope-intercept form?

y=−13x−1

y = 3x + 1

y=−3x−1

y=3x−1

number graph ranging from negative six to six on the x and y axes. a line is drawn on the graph that passes through the labeled points begin ordered pair negative 1 comma 2 end ordered pair and begin ordered pair 1 comma negative 4 end ordered pair

Question and answers are in the attached picture. you so much in advance.

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'