Select all the observations that are true about the scatter plot.
1 answer:
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Answer:
y = - 3x + 5
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (3, - 4) and (x₂, y₂ ) = (1, 2)
m = =
= - 3, thus
y = - 3x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (1, 2), then
2 = - 3 + c ⇒ c = 2 + 3 = 5
y = - 3x + 5 ← equation of line
Answer:
0
Step-by-step explanation:
Find the slope of a line going through points (-4,3) and (5,3) by calculating the ratio of the change in y to the change in x.
To do this I like to line up the points and subtract (this is finding the change). After doing so, you will put 2nd difference over 1st difference.
(-4 , 3)
-(5 , 3)
------------
-9 0
; this reduces to 0.
The slope is 0.
Slope is rise over run.
So if you had looked at the y's there was no change (0 change) while there was change in the x's. This means the line is horizontal since the graph isn't rising.