Evaluate Expressions
Evaluate x + 2y when x = -1 and y = 4
(-1)+2(4)
= 7
x y
1 6
2 10
3 14
4 18
y = 4x + 2
Top ?
Left: Right:
8 2
Bottom?
Top: 16
Bottom: 10
Use the distribute property to write the following in the equivalent form (do not solve)
6(2+3)
6(2)+6(3)
Use x or n for "a number"
A number multiplied by 3
3x or 3n
Evaluate x2 when x = -3
(-3)2=9
x y
1 7
2 5
3 3
4 1
y = -2x + 9
Top ?
Left: Right:
8 -4
Bottom?
Top: -32
Bottom: 4
Use the distribute property to write the following in the equivalent form (do not solve)
6(2-4)
6(2)-6(4)
Use x or n for "a number"
4 less than 3 times a number
3n - 4 or 3x - 4
Evaluate (x+y)+4x2 when x = 3 and y = -2
(3+(-2)) + 4(3)2
= 37
x y
1 8
3 12
5 16
7 20
y = 2x + 6
Top: 18
Left: Right: ?
6
Bottom ?
Right: 3
Bottom: 9
Use the distribute property to simplify the following expression
3(x+4)
3x+12
Use x or n for "a number"
2 more than a number, then multiply the result by 3
3(x+2) or 3(n+2)
Evaluate 3x - 2y + x2 when x = -1 and y = 2
3(-1) - 2(2) + (-1)2
= -6
x y
1 4
4 10
5 12
8 18
y = 2x + 2
Top: 24
Left: ? Right: ?
Bottom 14
Left & Right:
12 and 2 (either order)
Use the distribute property to simplify the following expression
3(x-9)
3x-27
Use x or n for "a number"
6 less than a number, then the result multiplied by -4
-4(x- 6) or -4(n-6)
Evaluate (2x -3y) + (x2 - 4x) when x = 3 and y = -2
(2(3)-3(-2)) + (32-4(3))
12 + (-3)
= 9
x y
1 3
2 6
3 11
4 18
y = x2 + 2
Top: 10
Left: ? Right: ?
Bottom: -7
Left & Right:
-2 and -5 (either order)
Use the distribute property to simplify the following expression
-4(x-6)
-4x + 24
Use x or n for "a number"
3 less than a number, all divided by 2
n-3
2