HELP ASAP!! 100 POINTS!! describe how you would plot the point (-4, 3)
2 answers:
Answer:
Step-by-step explanation:
in a coordinate pair (x,y) the first point is x
it goes on the horizontal axis ( left to right)
if it is positive it goes to the right of the (0,0) point or the origin
if it is negative it goes to the left of the origin
since x=-4 it will go 4 units to the left
now we look at the y coordinate, we will move up or down from the -4 point
if it is positive, we will move up
if it is negative, we will move down
since y= 3 is positive, we will move up 3 units
draw a dot and label it (-4,3)
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Answer:
Hello,
Step-by-step explanation:
do I remind you of the formula :
where (a,b) is the vertex and y=k the directrix
Focus=(-4,-2)
Directrix: y=0
Vertex=(-4,-1)
The correct answer is shown in attached figure
To find the correct graph, we should study the continuity of the function
Check the continuity at x = -2
from the left ⇒⇒ f(-2) = 1/2 * -2 + 3 = 2
from the right ⇒⇒ f(-2) = 2
∴ The function is continuous at x = -2
Check the continuity at x = 3
from the left ⇒⇒ f(3) = 2
from the right ⇒⇒ f(3) = 2*3 - 3 = 3
∴ The function is jump discontinuous at x = 3
From the previous results the correct graph is the last as shown in attached graph.
To find the correct graph, we should study the continuity of the function
Check the continuity at x = -2
from the left ⇒⇒ f(-2) = 1/2 * -2 + 3 = 2
from the right ⇒⇒ f(-2) = 2
∴ The function is continuous at x = -2
Check the continuity at x = 3
from the left ⇒⇒ f(3) = 2
from the right ⇒⇒ f(3) = 2*3 - 3 = 3
∴ The function is jump discontinuous at x = 3
From the previous results the correct graph is the last as shown in attached graph.