The graph below shows the relationship between the number of people in a group and the total cost of admission tickets for a cir
cus
2 answers:
Answer:
Option B is the answer.
Step-by-step explanation:
The graph attached shows the relation between the numbers of people in a group and cost of the tickets.
Slope of this line will represent the unit rate of admission ticket.
Since this line passes passes through two points (0, 0) and (1, 15)
Therefore, slope of the line will be =
=
= 15
Therefore, $15 is the cost of one admission ticket and (1, 15) is the point showing unit rate.
Option B will be the answer.
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You have to write the equation for a line that crosses the point (-4, -7) and is perpendicular to the line
When you have to determine a line that is perpendicular to a known line, you have to keep in mind that the slope of the perpendicular line will be the negative inverse of the first one.
If for exampla you have two lines, the first one being:
And the second one, that is perpedicular to the one above:
The slope of the second one is the negative inverse of the first one:
The slope of the given line y=-7/4+4 is m=-7/4
So the slope of the perpendicular line has to ve the inverse negative of -7/4
Considering it has to pass through the point (-4,-7) and that we already determined its slope, you can unse the point slope formula to determine the equation of the perpendicular line:
replace with the coordinates of the point and the slope and calculate:
Subtract 7 to both sides of the equation to write it in slope-intercept form:
Now you can graph both lines
