Answer:
y-intercept = (0,-21)
vertex = (2,-25)
Step-by-step explanation:
The range refers to the value of y for which x is define.
So let y=f(x),

Try making x the subject to obtain,

x is defined for all real values of y greater than
0.
Hence the correct answer is D.
Answer:
See attachment
Step-by-step explanation:
We want to graph the system
2x+y=8
-x+2y=6
Let us rewrite the lines in slope intercept form:
y=-2x+8

The first line has a slope of -2 and a y-intercept of 8
The second line has a slope of 1/2 and a y-intercept of 3
We can no graph the lines as shown in the attachment.
<u>Answer:</u>
The correct answer option is B.
<u>Step-by-step explanation:</u>
We are given a graph with different intervals A, B, C and D and we are to figure out whether which of these intervals on the graph can be describes as linear increasing.
From the given interval options, we can see that C is constant while the intervals A and D are decreasing linear.
Its the interval B which can be describes as linear increasing since it has a positive slope.