Maths-
SAT
Easy
Question
The graph of y = 2x - a is shown, where a is a constant. What is the value of a ?
- 4
- 3
- 2
- 1
The correct answer is: 4
Given y = 2x – a
From the figure (x,y) = (2,0)
x = 2
y = 0
y = 2x – 9
0 = 22 – 9
4 – a = 0
4 = a
a = 4
Related Questions to study
maths-
Which of the following is( are) an x-intercept of the graph of 
in the xy-plane?
I. (-3, 0)
II. (2, 0)
III. (0, 0)
Which of the following is( are) an x-intercept of the graph of in the xy-plane?
I. (-3, 0)
II. (2, 0)
III. (0, 0)
maths-sat
maths-
The function f is a linear function. They-intercept of the graph of y = f(x) in the xy-plane is (0, -12). What is the y-intercept of the graph of y = f(x) + 2?
The function f is a linear function. They-intercept of the graph of y = f(x) in the xy-plane is (0, -12). What is the y-intercept of the graph of y = f(x) + 2?
maths-sat
maths-
Quadrilateral ABCD is shown. Which equation shows how the measures of the angles of the quadrilateral are related?
Quadrilateral ABCD is shown. Which equation shows how the measures of the angles of the quadrilateral are related?
maths-sat
maths-
Which of the following is equivalent to 4x3 + 8x2 ?
Which of the following is equivalent to 4x3 + 8x2 ?
maths-sat
maths-
During mineral formation, the same chemical compound can beco me different minerals depending on the temperature and pressure at the time of formation. A phase diagram is a graph that shows the conditions that are needed to form each mineral. The graph above is a portion of the phase diagram for aluminosilicates, with the temperature T, in degrees Celsius (°C), on the horizontal axis, and the pressure P, in gigapascals (GPa), on the vertical axis.
P = −0.00146T + 1.11
An equation of the boundary line between the andalusite and sillimanite regions is approximated by the equation above. What is the meaning of the T-intercept of this line?
During mineral formation, the same chemical compound can beco me different minerals depending on the temperature and pressure at the time of formation. A phase diagram is a graph that shows the conditions that are needed to form each mineral. The graph above is a portion of the phase diagram for aluminosilicates, with the temperature T, in degrees Celsius (°C), on the horizontal axis, and the pressure P, in gigapascals (GPa), on the vertical axis.
P = −0.00146T + 1.11
An equation of the boundary line between the andalusite and sillimanite regions is approximated by the equation above. What is the meaning of the T-intercept of this line?
maths-sat
maths-
The budget for a school band was $8,000 in 2010. The budget decreased by 15% from 2010 to 2011 and then increased by 22% from 2011 to 2012. Which of the following expressions represents the budget, in dollars, for the school band in 2012?
The budget for a school band was $8,000 in 2010. The budget decreased by 15% from 2010 to 2011 and then increased by 22% from 2011 to 2012. Which of the following expressions represents the budget, in dollars, for the school band in 2012?
maths-sat
maths-
The bar graph above shows the total number of scheduled flights and the number of delayed flights for five airlines in a one-month period. Values have been rounded to the nearest 1000 flights.
According to the graph, what is the median number of delayed flights for the airlines shown?
The bar graph above shows the total number of scheduled flights and the number of delayed flights for five airlines in a one-month period. Values have been rounded to the nearest 1000 flights.
According to the graph, what is the median number of delayed flights for the airlines shown?
maths-sat
maths-
What is the result of increasing 300 by 200%?
What is the result of increasing 300 by 200%?
maths-sat
maths-
The bar graph shows the number of discovered near-Earth asteroids, by classification, as of April 2017 Of the near-Earth asteroids, how many more are classified as medium, large, or very large than are classified as very small or small?
The bar graph shows the number of discovered near-Earth asteroids, by classification, as of April 2017 Of the near-Earth asteroids, how many more are classified as medium, large, or very large than are classified as very small or small?
maths-sat
maths-
A psychologist conducting a memory experiment provided participants with a list of three-letter sequences. Immediately after the experiment, the participants remembered 100% of the sequences. The psychologist found that the percentage of sequences the participants remembered decreased by 30% for every 3-second interval that passed. Which function best models this situation, where P is the percentage of sequences the participants remembered, and t is the time, in seconds, that passed?
A psychologist conducting a memory experiment provided participants with a list of three-letter sequences. Immediately after the experiment, the participants remembered 100% of the sequences. The psychologist found that the percentage of sequences the participants remembered decreased by 30% for every 3-second interval that passed. Which function best models this situation, where P is the percentage of sequences the participants remembered, and t is the time, in seconds, that passed?
maths-sat
maths-
For a function f, f(-1) = 12 and f(1) = 16. If the graph of y = f(x) is a line in the xy- plane, what is the slope of the line?
For a function f, f(-1) = 12 and f(1) = 16. If the graph of y = f(x) is a line in the xy- plane, what is the slope of the line?
maths-sat
maths-
3x + 4y = 16
The given equation models the number of 3-credit—hour courses, x, and the number of 4-credit – hour courses, y, that Camila can take for a total of 16 credit hours next semester. Which graph models this relationship?
3x + 4y = 16
The given equation models the number of 3-credit—hour courses, x, and the number of 4-credit – hour courses, y, that Camila can take for a total of 16 credit hours next semester. Which graph models this relationship?
maths-sat
maths-
5y = 3x
In the xy-plane, the lines that correspond to the system of equations above intersect at the point (a, b). What is the value of 
?
5y = 3x
In the xy-plane, the lines that correspond to the system of equations above intersect at the point (a, b). What is the value of ?
maths-sat
maths-
The dot plot show the distribution of heights, in inches, of members from four basketball teams. Of the data sets summarized by the dot plots, which has the smallest standard deviation?
The dot plot show the distribution of heights, in inches, of members from four basketball teams. Of the data sets summarized by the dot plots, which has the smallest standard deviation?
maths-sat
maths-
The velocity v, in meters per second, of a falling object on Earth after t seconds, ignoring the effect of air resistance, is modeled by the equation v = 9.8t. There is a different linear relationship between time and velocity on Mars, as shown in the table below.
|
Time (seconds) |
Velocity on Mars (meters per second) |
|
0 |
0 |
|
4 |
14.8 |
|
8 |
29.6 |
The velocity v, in meters per second, of a falling object on Earth after t seconds, ignoring the effect of air resistance, is modeled by the equation v = 9.8t. There is a different linear relationship between time and velocity on Mars, as shown in the table below.
|
Time (seconds) |
Velocity on Mars (meters per second) |
|
0 |
0 |
|
4 |
14.8 |
|
8 |
29.6 |
maths-sat
