All SSAT Upper Level Math Resources
Example Questions
Example Question #3 : Use Similar Triangles To Show Equal Slopes: Ccss.Math.Content.8.Ee.B.6
What is the -intercept of the graph of the function ?
The -intercept of the graph of a function is the point at which it intersects the -axis - that is, at which . This point is , so evaluate :
The -intercept is .
Example Question #2 : X And Y Intercept
Give the -intercept, if there is one, of the graph of the equation
The graph has no -intercept.
The graph has no -intercept.
The -intercept is the point at which the graph crosses the -axis; at this point, the -coordinate is 0, so substitute for in the equation:
However, since this expression has 0 in a denominator, it is of undefined value. This means that there is no value of paired with -coordinate 0, and, subsequently, the graph of the equation has no -intercept.
Example Question #2 : How To Find X Or Y Intercept
Give the -intercept, if there is one, of the graph of the equation
The graph has no -intercept.
The -intercept is the point at which the graph crosses the -axis; at this point, the -coordinate is 0, so substitute for in the equation:
The -intercept is .
Example Question #4 : X And Y Intercept
Give the -intercept, if there is one, of the graph of the equation
.
The graph does not have a -intercept.
The -intercept is the point at which the graph crosses the -axis; at this point, the -coordinate is 0, so substitute for in the equation:
The -intercept is the point .
Example Question #2 : X And Y Intercept
A line passes through and is perpendicular to the line of the equation . Give the -intercept of this line.
The line has no -intercept.
First, find the slope of the second line by solving for as follows:
The equation is now in the slope-intercept form ; the slope of the second line is the -coefficient .
The first line, being perpendicular to the second, has as its slope the opposite of the reciprocal of , which is .
Therefore, we are looking for a line through with slope . Using point-slope form
with
,
the equation becomes
.
To find the -intercept, substitute 0 for and solve for :
The -intercept is the point .
Example Question #1 : X And Y Intercept
A line passes through and is parallel to the line of the equation . Give the -intercept of this line.
The line has no -intercept.
First, find the slope of the second line by solving for as follows:
The equation is now in the slope-intercept form ; the slope of the second line is the -coefficient .
The first line, being parallel to the second, has the same slope.
Therefore, we are looking for a line through with slope . Using point-slope form
with
,
the equation becomes
.
To find the -intercept, substitute 0 for and solve for :
The -intercept is the point .
Example Question #1 : How To Find X Or Y Intercept
Give the -intercept of the line with slope that passes through point .
The line has no -intercept.
By the point-slope formula, this line has the equation
where
By substitution, the equation becomes
To find the -intercept, substitute 0 for and solve for :
The -intercept is the point .
Example Question #1 : X And Y Intercept
Give the -intercept of the line that passes through points and .
The line has no -intercept.
First, find the slope of the line, using the slope formula
setting :
By the point-slope formula, this line has the equation
where
; the line becomes
or
To find the -intercept, substitute 0 for and solve for :
The -intercept is .
Example Question #8 : How To Find X Or Y Intercept
Give the -intercept of the line that passes through points and .
First, find the slope of the line, using the slope formula
setting :
By the point-slope formula, this line has the equation
where
; the line becomes
or
To find the -intercept, substitute 0 for and solve for :
The -intercept is .
Example Question #101 : Expressions & Equations
Give the -intercept of the line with slope that passes through point .
By the point-slope formula, this line has the equation
where
By substitution, the equation becomes
To find the -intercept, substitute 0 for and solve for :
The -intercept is .