Postsecondary Education Readiness Test Mathematics Worksheet With Answer Key - Florida State College At Jacksonville Page 15
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18Florida State College Review for PERT Mathematics – Part 3
2
8
d
20
2
y
y
4
4.
5.
y
1
y
2
d
4
d
4
d
2
Sample problems graphing linear equations
4. Graph the equation y = – 2x + 4 use an
1. Give the slope and y intercept of the line
determined by the equation y = 2x – 3.
x,y coordinate grid.
2. Give the slope and y intercept of the
5. Graph the equation
use an x,y
3
y
x
4
2
graph for the equation.
1
2
y
x
coordinate grid.
2
3
6. Graph the equation 3x – 2y = 6 use an
3. Give the x and y intercepts for the line
determined by the equation
x,y coordinate grid.
-6x + 5 y = 2
Solutions:
1. Slope 2 and y intercept – 3
2. Slope
and y intercept
1
2
2
3
3. x intercept
. Solve for x when y = 0 and you get
.
1
1
3
3
Y intercept
Solve for y when x = 0 and you get
.
2
2
5
5
4. To graph y = – 2x + 4, begin at the y intercept 4 then count the slope – 2 which would be
down 2 units and right one unit because all whole numbers have a denominator of 1. Place
a point here and connect with the y intercept.
, begin at the y intercept – 4 then count the slope
5. To graph
which would be
3
3
y
x
4
2
2
down 3 units and right 2 units. Place a point here and connect with the y intercept.
6. Use the intercepts to graph this equation. The x intercept is 2 and the y intercept is – 3.
Connect the intercepts with a line
Sample problems solving quadratic equations
Sample problems involving only a squared variable term.
2
2
2
1.
2.
3.
2
x
8
x
46
(
x 3
)
144
Solutions:
2. 9, – 15
1.
3.
2
6 78
.
14
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