All ACT Math Resources
Example Questions
Example Question #11 : How To Find Slope Of A Line
What is the slope of the line represented by the equation ?
To rearrange the equation into a format, you want to isolate the so that it is the sole variable, without a coefficient, on one side of the equation.
First, add to both sides to get .
Then, divide both sides by 6 to get .
If you divide each part of the numerator by 6, you get . This is in a form, and the is equal to , which is reduced down to for the correct answer.
Example Question #222 : Geometry
What is the slope of the given linear equation?
2x + 4y = -7
-2
1/2
-1/2
-7/2
-1/2
We can convert the given equation into slope-intercept form, y=mx+b, where m is the slope. We get y = (-1/2)x + (-7/2)
Example Question #231 : Geometry
What is the slope of the line:
First put the question in slope intercept form (y = mx + b):
–(1/6)y = –(14/3)x – 7 =>
y = 6(14/3)x – 7
y = 28x – 7.
The slope is 28.
Example Question #12 : How To Find Slope Of A Line
What is the slope of a line that passes though the coordinates and ?
The slope is equal to the difference between the y-coordinates divided by the difference between the x-coordinates.
Use the give points in this formula to calculate the slope.
Example Question #91 : Coordinate Plane
What is the slope of a line running through points and ?
The slope is equal to the difference between the y-coordinates divided by the difference between the x-coordinates.
Use the give points in this formula to calculate the slope.
Example Question #10 : How To Find The Slope Of A Line
What is the slope of the line defined as ?
To calculate the slope of a line from an equation of the line, the easiest way to proceed is to solve it for . This will put it into the format , making it very easy to find the slope . For our equation, it is:
or
Next you merely need to divide by :
Thus, the slope is
Example Question #96 : Algebra
What is the slope of the line perpendicular to ?
To begin, it is easiest to find the slope of a line by putting it into the form . is the slope, so you can immediately find this once you have the format correct. Thus, solve our equation for :
Now, recall that perpendicular lines have slopes of opposite sign and reciprocal numerical value. Thus, if our slope is , its perpendicular paired line will have a slope of .
Example Question #96 : Algebra
What is the slope of the line defined by the equation ?
The easiest way to find the slope of a line based on its equation is to put it into the form . In this form, you know that is the slope.
Start with your original equation .
Now, subtract from both sides:
Next, subtract from both sides:
Finally, divide by :
This is the same as:
Thus, the slope is .
Example Question #97 : Algebra
What is the slope of the line represented by the equation ?
The slope of an equation can be calculated by simplifying the equation to the slope-intercept form , where m=slope.
Since , we can solve for y. In shifting the 5 to the other side, we are left with .
This can be further simplified to
, leaving us with the slope intercept form.
In this scenario, , so slope .
Example Question #31 : Lines
Find the slope of the line 6X – 2Y = 14
12
-3
3
-6
3
Put the equation in slope-intercept form:
y = mx + b
-2y = -6x +14
y = 3x – 7
The slope of the line is represented by M; therefore the slope of the line is 3.